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Rajendra 15 Apr in  BSc Tuition

Describe the nomenclature, isomerism and structure of carboxylic acids.

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Priya replied | 03 Jul

nomenclature:naming the compounds
exactly count the number of carbon atoms and find the alkane gropu...then name them..count the number of carbon atoms and find the isomerism

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Sathyapriya replied | 08 Jul

Isomerism is satisfied the one- t0-one and onto condition

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Raje 14 Apr in  BSc Tuition

 What are the applications of LASER? 

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Ricky Verma replied | 08 Jul

Medical applications
Welding and Cutting
Surveying

Garment industry
Laser nuclear fusion
Communication
Laser printing
CDs and optical discs
Spectroscopy
Heat treatment
Barcode scanners
Laser cooling

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Manjeet Singh replied | 08 Jul

some applications are here:
1.. in medical : in different surgery like eye operation., stone etc
2 In weapon
3. in communication
4.. in computers

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Vikas 14 Apr in  BSc Tuition

What is half wave plate and quarter wave plate?  

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Neetu replied | 12 Jun

The half wave plate can be used to rotate the polarization state of a plane polarized light.Quarter wave plate are used to turn plane-polarized light into circularly polarized light

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Suman 14 Apr in  BSc Tuition

What is temporal and spatial coherence?

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Neetu replied | 12 Jun

Spatial coherence is a concept of wave disturbance describing the correlation between periodic transmitted energy (wave signals) from one point to another,it can also be said that it is a mutual interdependence or connection of variable wave quantities of two different points in a given instant of time,the coherence is presented as a function of distance and mapped as correlation...  more»
Spatial coherence is a concept of wave disturbance describing the correlation between periodic transmitted energy (wave signals) from one point to another,it can also be said that it is a mutual interdependence or connection of variable wave quantities of two different points in a given instant of time,the coherence is presented as a function of distance and mapped as correlation against an absolute distance between points in question.
While spatial coherence is concerned with the phase correlation of waves in different observation points, temporal coherence entails the phase correlation of waves at a given point in space at two different instances of time,it is the measure of the average correlation between the value of a wave and itself delayed by a certain period of time depicting the characteristics of how well a wave can create an interference with itself.The delay on which the correlation effect is emphatically low is denoted by the degree of Tc (coherence time)[3], a state at which there is a significant shift in amplitude. «less

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R

Rasneet 14 Apr in  BSc Tuition

 What is the population inversion?

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Neetu replied | 12 Jun

Population inversion, in physics, the redistribution of atomic energy levels that takes place in a system so that laser action can occur. Normally, a system of atoms is in temperature equilibrium and there are always more atoms in low energy states than in higher ones. Although absorption and emission of energy is a continuous process, the statistical distribution (population) of...  more»
Population inversion, in physics, the redistribution of atomic energy levels that takes place in a system so that laser action can occur. Normally, a system of atoms is in temperature equilibrium and there are always more atoms in low energy states than in higher ones. Although absorption and emission of energy is a continuous process, the statistical distribution (population) of atoms in the various energy states is constant. When this distribution is disturbed by pumping energy into the system, a population inversion will take place in which more atoms will exist in the higher energy states than in the lower. «less

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R

Ramya 14 Apr in  BSc Tuition

What is molality?

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Suman replied | 07 May

Molarity is a unit of concentration measuring the number of moles of a solute per liter of solution.Represented by M symbol.

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Nagendra replied | 22 May

No of moles of solute present in 1kg solvent, it is denoted by m,it is not affected by heat means it's value remain same all temperature, where as M,N,vary it's value

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N

Nilesh 13 Apr in  BSc Tuition

Explain about the elliptically polarized light. 

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Sibaram replied | 13 Apr

In electrodynamics, elliptical polarization is the polarization of electromagnetic radiation such that the tip of the electric field vector describes an ellipse in any fixed plane intersecting, and normal to, the direction of propagation. An elliptically polarized wave may be resolved into two linearly polarized waves in phase quadrature, with their polarization planes at right...  more»
In electrodynamics, elliptical polarization is the polarization of electromagnetic radiation such that the tip of the electric field vector describes an ellipse in any fixed plane intersecting, and normal to, the direction of propagation. An elliptically polarized wave may be resolved into two linearly polarized waves in phase quadrature, with their polarization planes at right angles to each other. Since the electric field can rotate clockwise or counterclockwise as it propagates, elliptically polarized waves exhibit chirality and circular and linear polarization can be considered to be special cases of elliptical polarization. «less

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Dr replied | 14 Jul

When light travel in certain direction, ether particles vibrate.
- If they vibrate elliptically with constant period ,
-if they takes place in a plane perpendicular to direction of propagation &
- the amplitude of vibrations changes in magnitude and in direction
then light is said to be elliptically polarized.

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M

Munawar 13 Apr in  BSc Tuition

What do you mean diffraction? 

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U.k. replied | 13 Apr

Diffraction refers to various phenomena which occur when a wave encounters an obstacle or a slit. It is defined as the slight bending of light around the corners of an obstacle or aperture into the region of geometrical shadow of the obstacle.it is also described as the interference of waves according to the Huygens--Fresnel principle.
Diffraction occurs with all waves, including...  more»
Diffraction refers to various phenomena which occur when a wave encounters an obstacle or a slit. It is defined as the slight bending of light around the corners of an obstacle or aperture into the region of geometrical shadow of the obstacle.it is also described as the interference of waves according to the Huygens–Fresnel principle.
Diffraction occurs with all waves, including sound waves, water waves, and electromagnetic waves such as visible light, X-rays and radio waves. «less

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Dr replied | 14 Jul

It is the phenomenon of bending of light around the corners of small obstacles and spreading into geometrical shadow.

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S

Shiv 13 Apr in  BSc Tuition

 What is Plane of Vibration?

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U.k. replied | 13 Apr

A plane including the direction of light propagation and the direction of electric field is called the "plane of vibration".

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M

Muskan 13 Apr in  BSc Tuition

What do you mean by interference of light?

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U.k. replied | 13 Apr

Light rays of exactly same wave length and frequency are called monochromatic. If two monochromatic waves meet at a point, then there may be strengthening or weakening of light intensity depending upon the relative positions of the two waves. This phenomenon is called interference of light.

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Dr replied | 14 Jul

It is a phenomenon of modification and distribution of intensity of light, when two light waves of same frequency travelling in same direction and having zero or constant phase difference, superimpose on each other

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S

Swati 13 Apr in  BSc Tuition

What is temporal Laser? 

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Neetu replied | 13 Jun

temporal is a type of coherence. laser action based on coherence.For example, a stabilized and monomode helium–neon laser can easily produce light with coherence lengths of 300 m.

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A

Abraham 12 Apr in  BSc Tuition

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U.k. replied | 30 Apr

Hypermetropia means long sight and is where the image of a nearby object is formed behind the retina. This could be because the eye is too short, or the cornea or crystalline lens does not refract the light enough.

A hypermetropic person may have blurred vision when looking at objects close to them, and clearer vision when looking at objects in the distance. By placing...  more»
Hypermetropia means long sight and is where the image of a nearby object is formed behind the retina. This could be because the eye is too short, or the cornea or crystalline lens does not refract the light enough.

A hypermetropic person may have blurred vision when looking at objects close to them, and clearer vision when looking at objects in the distance. By placing a convex (plus powered) lens in front of a hypermetropic eye, the image is moved forward and focuses correctly on the retina. «less

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Isha Singh replied | 05 Jul

Hypermetropia(hyperopia) commonly known as farsightedness or longsightedness,is a defect of vision caused by an imperfection in eye(oftrn when eyeball is too short or the lens cannot become round enough),causing the eye to not have enough power to see close or nearby objects.This defect is usually genetic and can be corrected by using convex lens.It can occur at any stage but become...  more»
Hypermetropia(hyperopia) commonly known as farsightedness or longsightedness,is a defect of vision caused by an imperfection in eye(oftrn when eyeball is too short or the lens cannot become round enough),causing the eye to not have enough power to see close or nearby objects.This defect is usually genetic and can be corrected by using convex lens.It can occur at any stage but become noticeable above the age of 40 years. «less

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A

Ashwini 12 Apr in  BSc Tuition

Can you explain photoelectric effect? 

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Gurpreet Singh replied | 14 Jul

When a radiation with some frequency strikes on a metal electrons is ejected from it. The electrons ejected are called photoelectrons

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Dr replied | 14 Jul

Light consist of tiny particles called photons. Each photon travel with speed of light. It's frequency does not change when travel from to another medium. The rest mass is zero. Each photon possesses energy and momentum. So, when these photons of high frequency incident upon negatively charged metallic surface, electrons are emitted. The ejected electrons called photo electrons...  more»
Light consist of tiny particles called photons. Each photon travel with speed of light. It's frequency does not change when travel from to another medium. The rest mass is zero. Each photon possesses energy and momentum. So, when these photons of high frequency incident upon negatively charged metallic surface, electrons are emitted. The ejected electrons called photo electrons and the phenomenon called as photo electric effect. «less

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Vibhavesh 12 Apr in  BSc Tuition

What are the main components of a LASER?

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Neetu replied | 12 Jun

Every LASER consists of three basic components. These are -

Lasing material or active medium.

External energy source.

Optical resonator.

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Answer

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R

Reena 12 Apr in  BSc Tuition

What are the conditions of maxima and minima in an interference pattern?

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Dr Rajni replied | 13 Jun

Maxima and minima are plural forms of maximum and minimum.

However, in interference and diffraction maxima refers to the zones where the intensity of the light is maximum and minima when the intensity is minimum.

When if minimum of a wave superimposes on maximum of the other, it results in a destructive interference and intensity becomes a minimum of interference...  more»
Maxima and minima are plural forms of maximum and minimum.

However, in interference and diffraction maxima refers to the zones where the intensity of the light is maximum and minima when the intensity is minimum.

When if minimum of a wave superimposes on maximum of the other, it results in a destructive interference and intensity becomes a minimum of interference fringes, while if maxima of a wave superimposes on maxima of another wave or minimum of a wave superimposes on minimum of another wave, intensity becomes maximum.

For maxima path difference x = n?

For minima path difference x = (2n+1)?/2

For interference pattern, in double slit experiment maxima will be found at a distance y from the central maximum ,

y = n?D/d

D = distance between slit and screen

d = separation of the slits.

n = 1, 2, 3 …

For minima

y = (2n+1)?D/2d

In diffraction minima is found by equation

asin? = n?

a = slit width

For maxima the formula is a transcendental equation and not included in your syllabus. «less

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Dr replied | 15 Jul

Condition for maxima: Path difference between two waves should even multiple of half of wave length.
OR
The phase difference between two waves are even multiple of Pai radian
Condition for Minima: Path difference between two waves is odd multiple of half of wavelength
OR
phase difference between two waves are odd multiple of Pai radian

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Ramnarayanan 12 Apr in  BSc Tuition

What is Fraunhofer diffraction?

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Sibaram replied | 13 Apr

Fraunhofer diffraction is the type of diffraction that occurs in the limit of small Fresnel number . In Fraunhofer diffraction, the diffraction pattern is independent of the distance to the screen, depending only on the angles to the screen from the aperture.

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Dr replied | 14 Jul

Diffraction: It is the phenomenon of bending of light around the corners and spreading into the geometrical shadow of a tiny object.
Fraunhofer Diffraction: It is a type of diffraction in which source of light and screen are at effectively at infinite distance from the obstacle which causes diffraction. It can be achieved by two convex lens (i) one to make light from source...  more»
Diffraction: It is the phenomenon of bending of light around the corners and spreading into the geometrical shadow of a tiny object.
Fraunhofer Diffraction: It is a type of diffraction in which source of light and screen are at effectively at infinite distance from the obstacle which causes diffraction. It can be achieved by two convex lens (i) one to make light from source to be parallel (ii) other to focus the light after diffraction on the screen. «less

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Vaijant 18 Mar in  BSc Tuition

what is known as partition coefficient?

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Manisha 11 Mar in  BSc Tuition

what is the deffination of zero order reaction ?

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Nicholas 10 Mar in  BSc Tuition, BCom Tuition, Social Work(BCom Tuition)

When is the dual simplex method useful than simplex method?

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Lalit replied | 01 Apr

When no of constraints are more than no of constraints.

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Lalit replied | 01 Apr

When no of constraints are more than no variables then we use dual simplex metod because it reduces our calculation work.

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Kotwal 04 Mar in  BSc Tuition

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Dr Rajni replied | 24 Jun

The rotation of the planet has slightly flattened it out, so it has a larger diameter at the equator than at the poles. The equatorial diameter of Earth is 12,756 km, its polar diameter is 12,713 km, and its average diameter, which is referred to in common usage, is 12,742 km.

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Dr replied | 14 Jul

12.74*10^6 meter=12740Km

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R

Rajputana 05 Mar in  BSc Tuition

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U.k. replied | 30 Apr

Regenerative medicine is a game-changing area of medicine with the potential to fully heal damaged tissues and organs, offering solutions and hope for people who have conditions that today are beyond repair.

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Isha Singh replied | 05 Jul

Regenerative medicine is used to refer to methods to replace or regenerate human cells,tissues or organs in order to restore normal function.This includes cell therapies,tissue engineering,gene therapy and biomedical engineering techniques as well as more traditional treatments involving pharmaceuticals,biologics and devices.

Regenerative medicine harnesses the power...  more»
Regenerative medicine is used to refer to methods to replace or regenerate human cells,tissues or organs in order to restore normal function.This includes cell therapies,tissue engineering,gene therapy and biomedical engineering techniques as well as more traditional treatments involving pharmaceuticals,biologics and devices.

Regenerative medicine harnesses the power of stem cells(are undifferentiated cells that are capable of renewing themselves in definitely.They have unique capability of giving rise to specialized cell types like neurons,muscle cells,heart cells etc.They can be used to heal Parkinsons disease,Alzheimers disease,spinal cord injury,heart disease,diabetes,osteoarthritis etc) to repair,regenerate or replace diseased cells,tissues and organs. «less

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Rajputana 05 Mar in  BSc Tuition, Education(BSc Tuition)

Can AIDS spread through mosquito bite? explain.

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Palak replied | 09 Mar

The "snout" of a mosquito, the part that looks like a needle, is actually composed of six mouthparts. Four of these are used to pierce the skin of the person or animal that the mosquito is biting. The other two parts are composed of two tubes. One of the tubes sends saliva into the host and the other sends blood up to the mosquito. This two tube system is one reason why mosquitoes...  more»
The "snout" of a mosquito, the part that looks like a needle, is actually composed of six mouthparts. Four of these are used to pierce the skin of the person or animal that the mosquito is biting. The other two parts are composed of two tubes. One of the tubes sends saliva into the host and the other sends blood up to the mosquito. This two tube system is one reason why mosquitoes are unable to transmit HIV. Only saliva is injected into humans when a mosquito bites and thus HIV positive blood that a mosquito may have previously ingested is never transmitted to other humans. «less

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Thammannagari 08 Feb in  BSc Tuition

Hi guys ...can i know that which is the best tuition for the course of Bsc computers in Hyderabad

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Sunitha replied | 15 Feb

Of course so many it depends on location an exact requirement also. May I know the subjects then I'll try my level best as I am lecturer in computer science

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Ashish replied | 06 Mar

Could you please post your question little bit of more clearly?

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Santhoshy 03 Feb in  BSc Tuition

A slow fire bursts into a flame when air is blown on it.but a candle burning with a flame goes off when air is blown on it. Why?

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Headway Academy replied | 25 Feb

Candle flame surrounding cools faster when we blow since candle do not generate much heat.However a slow fire bursts into a flame when we blow to it because by blowing we are adding up more oxygen which acts as a comburent.

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Ankit replied | 16 Mar

because candle flame is very low

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Galal 21 Jan in  BSc Tuition

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U.k. replied | 12 Apr

Conjugation refers to coming together of two individuals making physical contact to exchange nuclei in Eukaryotes. and conjugation involves transfer of genetic material through an agent(plasmid) in Prokaryotes..

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U.k. replied | 12 Apr

Conjugation is the overlapping of p-orbitals with delocalization of pi-electrons in chemistry.

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