Test Details

Dual Nature of Radiation and Matter

Test

Feb 02, 5:00 PM

120 minutes

Feb 05, 5:00 PM

20.0 marks

MCQ

20 questions

sonikaanandacademy

Sonika Agarwal 25 years teching experience

Class Details

Physics

Class 12 Physics

Physics

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Question Text

Question 1 :
Light, like sound, cannot pass through vacuum. State whether true or false

Question 2 :
What is the effect of increasing the intensity of light that falls on the emitter in a photo electric effect apparatus ?

Question 4 :
When the amplitude of the light wave incident on a photo-metal sheet is increased then<br/>

Question 7 :
During the $19th$ century, light was considered to be a stream of particles called :

Question 8 :
In a photoelectric experiment, a white light is incident on the the metal surface. It is of a particular frequency causes emission of the electron from the surface of the metal. Which of the following actions would produce more electrons per second?

Question 10 :
Fill in the blanks:<div>According to Newton, different colors of light are due to the difference in _______ of the corpuscles.</div>

Question 12 :
<div>State whether true or false.</div>Light is a form of energy that causes a sensation of smell.

Question 15 :
Light of two different frequency whose photon have energies 1 eV and 2.5 eV respectively, successively illuminate a metal of work function 0.5eV. The ratio of maximum speed of the emitted electron will be:

Question 17 :
A beam of light consists of a bundle of light rays.

Question 18 :
No electron will be emitted if the incident photon's energy is less than the

Question 19 :
The electrons are emitted in the photo electric effect from a metal surface :

Question 20 :
There are two light sources A and B. The intensity of source A is more than that of B and the frequency of light emitted by source B is higher than that of A. The photo electric current obtained will be more from source(Assume that both the frequencies are greater than the threshold frequency of the metal on which these lights will be incident)<br/>

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