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In figure, if a parallel beam of white l...

In figure, if a parallel beam of white light is incident on the plane of the slit, then the distance of the nearest white spot on the screen form O is [assume `d lt lt D, lambda lt lt D`]

A

0

B

d/2

C

d/3

D

d/6

Text Solution

Verified by Experts

The correct Answer is:
D

White spot will be at the symmetrical point w.r.t. slits its distance from O will be (2d/3)-(d/2)=d/6
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Knowledge Check

  • A parallel beam of light of wavelength lambda is incident normally on a single slit of width d. Diffraction bands are obtained on a screen placed at a distance D from the slit. The second dark band from the central bright band will be at a distance given by ....

    A
    `(2lambdaD)/(d)`
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    `(lambdaD)/(2d)`
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    `(2lambdad)/(D)`
  • For a parallel beam of monochromatic light wavelength lambda diffraction is produced by single slit whose width 'a' is of the order of th wavelength of the light. If 'D' is the distance the screen from the slit, the width of th central maxima will be ......

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    `(2Dlambda)/(a)`
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    C
    `(Da)/(lambda)`
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  • Four times In Fraunhoffer diffraction by single slit having width d. The perpendicular light of wavelength lambda incident on it. The distance between slit and screen is D. If the linear width of central maximum is halve to the width of slit then=.....

    A
    `sqrt((lambdaD)/(4))`
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