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A single slit of width a is illuminated ...

A single slit of width a is illuminated by violet light of wavelength `400nm` and the width of the diffraction pattern is measured as y. When half of the slit width is covered and illuminated by yellow light of wavelength `600nm`, the width of the diffraction pattern is

A

The pattern vanishes and the width is zero

B

`y//3`

C

`3y`

D

None of these

Text Solution

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The correct Answer is:
C
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