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Light of wavelength lambda from a point ...

Light of wavelength `lambda` from a point source falls on a small circular rings around a central bright spot are formed on a screen beyond the obstacle The distance between the screen and obstacle is D. Then, the condition for the formation of rings, is

A

`lambda approx (D)/(4)`

B

`sqrt(lambda) approx (d)/(4D)`

C

`lambda approx (d^2)/(D)`

D

`d approx (lambda^2)/(D)`

Text Solution

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The correct Answer is:
C
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