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  #1  
Old January 11th, 2014, 10:22 AM
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Will you please provide here the Central Board of Secondary Education class 12th Physics question paper?

Hello Ganesh, As you are a student of class 12th in a CBSE school and you want a Question paper of physics of previous year. So hear is same-

Pre-Board Examination (2014-2015)
Subject : Physics
Class : XII
Time: 3 Hrs. M.M. 70

1. A capacitor of unknown is connected across a battery of V Volts. The charge stored in it is
360 µC. When potential across the capacitor is reduced by 120 V, the charge stored in it
becomes 120 µC. calculate:
(a) The potential V and the unknown capacitance C.
(b) What will be the charge stored in the capacitor. If the voltage applied had increased by
120V ? (Capacitor can withstand the increased potential safely.)

2. In an experiment, when a tiny circular obstacle is placed in the path of light from a distant
source, on the screen a bright spot is seen at the centre of the shadow of the obstacle.
Explain. State two points of difference between the interference pattern obtained in Youngs
double slit experiment and the diffraction pattern due to a single slit.

3. (a) Differentiate between three segment of a transistor on the basis of their size and level of
doping.
(b)How is a transistor biased to be in active state?

4. In a series LCR circuit connected to an c source of variable frequency and voltage
sin , m V V t , draw a plot showing the variation of current (I) with angular frequency (ω)
for two different value of resistance R1 and 2 1 2 ( ) R R R > . Write the condition under which the phenomenon of resonance occurs. For which value of the resistance out of the two curves, a
shaper resonance is produced Define Q-factor of circuit and give its significance.

5. In a plane electromagnetic wave travelling in vaccum, the electric field oscillate sinusoidally
at frequency of 10 2.0 10 x Hz and amplitude 48 + Vm 1 -
(a) What is the wavelength of the wave.

For more details attaching a file, as follows-







Attached Files Available for Download
File Type: pdf CBSE class 12th Physics Question Paper-.pdf (119.3 KB, 63 views)
File Type: pdf CBSE class 12th Physics Question Paper.pdf (371.3 KB, 107 views)

Last edited by Aakashd; May 29th, 2019 at 01:33 PM.
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  #2  
Old January 11th, 2014, 12:36 PM
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Join Date: Jun 2013
Default Re: CBSE class 12th Physics Question Paper

The Central Board of Secondary Education class 12th Physics has following Units:

I Electrostatics
II Current Electricity
III Magnetic effect of current & Magnetism
IV Electromagnetic Induction & Alternating Current
V Electromagnetic Waves
VI Optics
VII Dual Nature of Matter
VIII Atoms & Nuclei
IX Electronic Devices
X Communication Systems

Question paper:
Here is the attachment of the CBSE class 12th Physics Question paper:
Attached Files Available for Download
File Type: pdf CBSE class 12th Physics Question paper.pdf (477.6 KB, 294 views)
File Type: pdf CBSE class 12th Physics Question paper 1.pdf (894.7 KB, 231 views)
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  #3  
Old January 1st, 2015, 11:58 AM
nehe sanket
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can you send me the question paper of physics?
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  #4  
Old September 20th, 2015, 01:30 PM
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Default Re: CBSE class 12th Physics Question Paper

Hello myself Ganesh, I’m a student of class 12th in a CBSE school and I want a Question paper of physics of previous year . I’m in hurry please ..
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