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Kumarnaik 01/06/2016 in  IIT JEE Coaching classes

-------------- principle helps us to locate the position and the shape of the wavefront.

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Ankush 01/06/2016 in  IIT JEE Coaching classes

In reflection of light, the angle of incidence = the angle of ------------

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Vandana 01/06/2016 in  IIT JEE Coaching classes

For total internal ----------- to take place, light must travel from denser medium to rarer medium.

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Raj 01/06/2016 in  IIT JEE Coaching classes

The equation of bandwidth of interference fringes is ? = ---------------

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Rakshada 01/06/2016 in  IIT JEE Coaching classes

An important application of interference in thin films is the formation of -------------- rings.

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Debasish 01/06/2016 in  IIT JEE Coaching classes

The radius of the nth dark ring equation is ------------.

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Pankaj 01/06/2016 in  IIT JEE Coaching classes

The amount of bending in diffraction depends on the --------------

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Raveena 01/06/2016 in  IIT JEE Coaching classes

In Fresnel diffraction, the incident wavefront is either -------------------.

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Geetanjali 01/06/2016 in  IIT JEE Coaching classes

Using spectrometer, ------------------ diffraction can be observed.

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Vikas 01/06/2016 in  IIT JEE Coaching classes

The combined width of a slit and a ruling is called -----------------

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Manish 01/06/2016 in  IIT JEE Coaching classes

In a plane diffraction grating, ? = ------------

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Ravi 01/06/2016 in  IIT JEE Coaching classes

The phenomenon of ---------------- proves that light waves are transverse.

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Kamal 01/06/2016 in  IIT JEE Coaching classes

The plane perpendicular to the plane of vibration is called plane of -----------------

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Avinash 01/06/2016 in  IIT JEE Coaching classes

A device that produces a plane ------------- light is called polariser.

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Jagabandhu 01/06/2016 in  IIT JEE Coaching classes

The angle of incidence at which the reflected beam is completely plane polarised is angle of ----

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Amit 01/06/2016 in  IIT JEE Coaching classes

The equation for Brewster’s law is ? = ----------------

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Abdul 01/06/2016 in  IIT JEE Coaching classes

The polarising angle for glass is -------------------

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Aravind 01/06/2016 in  IIT JEE Coaching classes

The pile of plates uses the polarisation by ---------------- phenomenon. 45. The double refraction phenomenon was discovered by ------------------

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Devi 01/06/2016 in  IIT JEE Coaching classes

Crystals like mica, topaz etc. having two optic axes are called ------------------

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Altaf 01/06/2016 in  IIT JEE Coaching classes

The refractive index for Canada balsam cement is -------------- for both the rays.

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Manjunath 01/06/2016 in  IIT JEE Coaching classes

H polaroids use a thin film of ----------------

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Akshay 01/06/2016 in  IIT JEE Coaching classes

Polaroids are used as ----------------------- glasses

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Aksabanu 01/06/2016 in  IIT JEE Coaching classes

In an EM wave, the angle between the electric and the magnetic field vectors are at ------------.

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Sanjay 20/05/2016 in  IIT JEE Coaching classes

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Swagata replied | 29/05/2016

a mixture of dyes that changes colour gradually over a range of pH and is used (especially as indicator paper) in testing for acids and alkalis.

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Oasis Gurgaon replied | 29/05/2016

A universal indicator is a solution which undergoes several color changes over a wide range of pH's. The color is used to "indicate" pH directly. Universal indicators are usually mixtures of several indicators.

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Maheshwari 20/05/2016 in  IIT JEE Coaching classes

What is methyl orange? How is it made?

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Kamal replied | 21/05/2016

Methyl orange is a pH indicator frequently used in titrations because of its clear and distinct colour change. Because it changes colour at the pH of a midstrength acid, it is usually used in titrations for acids.

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Swagata replied | 29/05/2016

Methyl orange is an intensely colored compound used in dyeing and printing textiles. It is also known as C.I. Acid Orange 52, C.I. 13025, helianthine B, Orange III, Gold orange, and Tropaeolin D . Chemists use methyl orange as an indicator in the titration of weak bases with strong acids.

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