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Home > Learning Point > Previous years papers > CBSE > Class 12th CBSE > Class 12th CBSE 2015 > Class 12th CBSE 2015 Physics Paper Set 2

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Class 12th CBSE 2015 Physics Paper Set 2

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Class-12th CBSE
Subject-Physics Set 2
year-2015      

Here is some questions:-
SECTION-A

1. What is the electric flux through a cube of side 1 cm which encloses an electric dipole ?
SECTION-B
1. Show that the radius of the orbit in hydrogen atom varies as n2, where n is the principal quantum number of the atom.
SECTION – C
1. Draw a block diagram of a detector for AM signal and show, using necessary processes and the waveforms, how the original message signal is detected from the input AM wave.
Section – D
1. A group of students while coming from the school noticed a box marked “Danger H.T. 2200 V” at a substation in the main street.......
Answer the following questions :
(i) What device is used to bring the high voltage down to low voltage of a.c. current and what is the principle of its working ?
 
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