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A linear aperture whose width is 0.02cm ...

A linear aperture whose width is `0.02cm` is placed immediately in front of a lens of focal length `60cm`. The aperture is illuminated normally by a parallel beam of wavelength `5xx10^-5cm`. The distance of the first dark band of the diffraction pattern from the centre of the screen is

A

`0.10 cm`

B

`0.25 cm`

C

`0.20 cm`

D

`0.15 cm`

Text Solution

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The correct Answer is:
D
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