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Chapter 9 - Physical Optics - 2
1.
Fringe spacing in the interference pattern produced by Young's double slit experiment depends upon:-
a) Size of the slits
b) Size of the screen
c) Intensity of light
d) Distance between the slits and the screen
2.
Interference of light takes place due to the:-
a) Linear superposition of waves
b) Product of amplitudes of waves
c) Angular superposition of waves
d) All of the above
3.
Light is type of .......... which produces sensation of vision.
a) Object
b) Energy
c) Force
d) Speed
4.
Waves emitted from the source with speed C, after time t travels a distance .................
a) It
b) bt
c) Ct
d) at
5.
A surface on which all the points have the same phase of vibration is called ......................
a) Wave Length
b) Wave front
c) Wave Amplitude
d) Frequency
6.
Every point on wave front is considered as a ...................... of secondary wavelets.
a) outlet
b) measure
c) source
d) inlet
7.
The Interfering beams of light must be coherent and ......................
a) bic-hromatic
b) monochromatic
c) non-monochromatic
d) non-chromatic
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