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  #2  
30th July 2014, 08:04 AM
Super Moderator
 
Join Date: Apr 2013
Re: CBSE Class 12th Science Physics Question Paper

As you are looking for the question paper of the Central Board Of Secondary Education Class 12th Science, here i am providing list of few questions given below.
An electron is accelerated through a potential difference of 100 volts. What is the
de-Broglie wavelength associated with it ? To which part of the electromagnetic
spectrum does this value of wavelength correspond ?

In which orientation, a dipole placed in a uniform electric field is in (i) stable,
(ii) unstable equilibrium ?

State the conditions for the phenomenon of total internal reflection to occur.

Explain the function of a repeater in a communication system.

(i) Write two characteristics of a material used for making permanent magnets.
(ii) Why is core of an electromagnet made of ferromagnetic materials ?

Arrange the following electromagnetic radiations in ascending order of their
frequencies :
(i) Microwave
(ii) Radio wave
(iii) X-rays
(iv) Gamma rays
Write two uses of any one of these.

Which part of electromagnetic spectrum has largest penetrating power ?

A glass lens of refractive index 1.45 disappears when immersed in a liquid. What is
the value of refractive index of the liquid ?

What is the ratio of radii of the orbits corresponding to first excited state and ground
state in a hydrogen atom ?

The radii of curvature of the faces of a double convex lens are 10 cm and 15 cm.
If focal length of the lens is 12 cm, find the refractive index of the material of the
lens.








For more questions , here i am giving attachment
Attached Files
File Type: pdf CBSE 12TH Physics Question Paper.pdf (1.05 MB, 161 views)
  #3  
24th February 2015, 05:06 PM
Super Moderator
 
Join Date: Apr 2013
Re: CBSE Class 12th Science Physics Question Paper

As you are looking for the CBSE Class 12th Science Physics Question Paper so here I am sharing the same with you

Time allowed : 3 hours

Maximum Marks : 70
There are 30 questions in total.

Questions No. 1 to 8 are very short answer type questions and carry one mark each.

Questions No. 9 to 18 carry two marks each, questions 19 to 27 carry three marks each

Questions 28 to 30 carry five marks each.

CBSE Class 12th Science Physics Question Paper








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