Wave OpticsHard
Question
Diameter of a circular disc is 1 cm. The disc is placed 1 metre from a light source of λ = 6000
. If a screen is placed 2 metre away from the disc. Then the number of half period zones covered by the disc will be :
. If a screen is placed 2 metre away from the disc. Then the number of half period zones covered by the disc will be :Options
A.21
B.25
C.42
D.30
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