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A slit of width d is placed in front of ...

A slit of width d is placed in front of a l ens of focal length 0.5m and is illuminated normally with light of wavelength `5.89xx10^(-7)m`. The first diffraction minima on either side of the central diffraction maximum are separated by `2xx10^(-3)m` . The width d of the slit is `"_________"`m.

A

`1.47xx10^(-4)m`

B

`2.94xx10^(-4)m`

C

`1.47xx10^(-7)m`

D

`2.92xx10^(-7)m`

Text Solution

Verified by Experts

The correct Answer is:
B
`w = 2y= (2lambda D)/(a) = (2f lambda)/(a)`
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NARAYNA-WAVE OPTICS-LEVEL - II(H.W)
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