1
KCET 2022
MCQ (Single Correct Answer)
+1
-0

For light diverging from a finite point source,

A
the intensity decreases in proportion to the distance squared
B
the wavefront is parabolic
C
the intensity at the wave front does not depend on the distance
D
the wave front is cylindrical
2
KCET 2022
MCQ (Single Correct Answer)
+1
-0

The fringe width for red colour as compared to that for violet colour is approximately

A
2 times
B
4 times
C
8 times
D
3 times
3
KCET 2022
MCQ (Single Correct Answer)
+1
-0

In case of Fraunhoffer diffraction at a single slit, the diffraction pattern on the screen is correct for which of the following statements?

A
Central bright band having alternate dark and bright bands of decreasing intensity on either side.
B
Central dark band having uniform brightness on either side.
C
Central bright band having dark bands on either side.
D
Central dark band having alternate dark and bright bands of decreasing intensity on either side.
4
KCET 2022
MCQ (Single Correct Answer)
+1
-0

When a compact disc (CD) is illuminated by small source of white light coloured bands are observed. This is due to

A
diffraction
B
interference
C
reflection
D
scattering
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