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. If p-type material of the pn-junction is connected with negative terminal of the battery and n-type material with positive terminal of the battery, it is said to be __________. (forward biased, reversed biased, zero biased, none of these)

Asked by Narendra Kumar Sharma 18/02/2015 Last Modified 18/02/2015

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Which book is good for maths for class puc?

RS Agarwal is the best book for board exams

Raju

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In 1900, __________ proposed a formula which explained I detail the whole shape of the black body spectrum for all wavelengths. (Wein, Rayleigh, Einstein, Maxwell Plank)

Max Plank

Narendra Kumar

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. The photoelectric effect establishes that __________. (Light travels in the form of inertial of quanta of energy, Light travels in the form of transverse waves, light travels in the form of longitudinal waves, light is a transverse electromagnetic wave)

light travels in the form of quanta of energy

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Dear friends, Please correct me in case I am wrong. I your opinion , what should be the maximum number of students in a coaching class, so that each student can have maximum dedicated time from the attending teacher in the classroom. In present days, cost and time of coaching / tuition matters a lot . The same will be demontrated by the following two examples : Example 1 : Suppose a student pays Rs. 4000/= per month ( 26 days in a month , excluding Sundays ), One hour per day , number of student is only one, then cost of coaching per minute works out to (Rs. 4000/=X 1 Student )/(26 days X 60 min/day ) = Rs.2.56 per min. cost and he will get dedicated time of 60 min. each day to carry on his studies. Example - 2 : Suppose a student pays Rs. 2000/= per month ( 26 days in a month , excluding Sundays ), One hour per day , number of student is 30 in a class, then cost of coaching per minute works out to (Rs. 2000/=X 30 Students in a coaching class ) / (26 days X 60 min/day ) = Rs.38.46 per min. cost and he will get dedicated time of only two min. each day for his studies. The above examples shows that though the monthly fees paid by each student is just half ( Rs. 2000/= see example -2 ) in case of classroom type of coaching as compared to the individual coaching ( Rs. 4000/= see example - 1 ), but on the other side cost of coaching per min. based on true dedicated time is 15 times higher in case of classroom type coaching with mass students than single student coaching. These can be however extrapolated for any number of students in a coaching class. As a result the speed of learning process of a student will be about fifteen times slower in classroom type coaching having mass students in a class ignoring the other factors. However, it may be the choice of the students and parents which option is better for them ? Regards, Sudhansu bhushan Roy.

Sir your calculations are excellent. I would like to add few things. 1. It depends on the student / parents choice at the end. 2. It never implies that effective attention to a student is 2-3 mins, so...

Sudhansu Bhushan R.

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Out of 12 consonants and 4 vowels, how many words of 6 consonants and 3 vowels can be formed?

Plz check out the attachment

Veena

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