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If a light of wavelength lambda falling ...

If a light of wavelength `lambda` falling on a single slit of width a diffracts at an angle`theta`, the condition of first minima will be

A

`lambda sin theta = a`

B

`a cos theta = lambda`

C

`a sin theta = lambda`

D

`lambda cos theta = a`

Text Solution

Verified by Experts

In this case, the condition of first minima will be `a sin theta = lambda`
The option © is correct.
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Knowledge Check

  • In the diffraction of light of wavelength lambda at a single slit of width a, the angle theta between the central maximum and first minimum on either side is

    A
    `(lambda)/(a)`
    B
    `(lambda)/(2a)`
    C
    `(lambda)/(4a)`
    D
    `(pi)/(2)`

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