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Old December 31st, 2013, 06:03 PM
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Default Physics Problems of 12th Class

Can you Give me physics question paper for the class 12th of CBSE board of education ??
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Old January 2nd, 2014, 01:28 PM
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Join Date: Jun 2013
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Default Re: Physics Problems of 12th Class

Here I am giving you me physics question paper for the class 12th of CBSE board in a PDF file attached with it so you can get it easily..

1. Two identical charged particles moving with same speed enter a region of uniform magnetic field. If one of these
enters normal to the field direction and the other enters along a direction at 300 with the field, what would be the
ratio of their angular frequencies?

2. Why does a metallic piece become very hot when it is surrounded by a coil carrying high frequency alternating

3. How is a sample of an n-type semiconductor electrically neutral though it has an excess of negative charge carriers?

4. Name the characteristics of electromagnetic waves that
(i) increases
(ii) remains constant
in the electromagnetic spectrum as one moves from radiowave region towards ultravoilet region.

5. How would the angular separation of interference fringes in young’s double slit experiment change when the
distance of separation between the slits and the screen is doubled?

6. Calculate the ratio of energies of photons produced due to transition of electron of hydrogen atom from its,
(i) Second permitted energy level to the first level, and
(ii) Highest permitted energy level to the second permitted level

7. Give expression for the average value of the a c voltage
Attached Files
File Type: pdf CBSE physics paper.pdf (70.7 KB, 73 views)
File Type: pdf CBSE physics paper 1.pdf (894.7 KB, 60 views)
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