Visible light passing through a circular hole forms a diffraction…

MCQ

Visible light passing through a circular hole forms a diffraction disc of radius 0.1mm on a screen. If an X-ray is passed through the same setup, the radius of the diffraction disc will be:

A
zero
B
< 0.1mm
C
0.1mm
D
> 0.1m

✓

Answer

< 0.1mm

Explanation:

Radius of the diffraction disc is directly proportional to the wavelength of the light used for the given hole. We know that the wavelength of an X-ray is less than the wavelength of visible light. If an X-ray is passed through the same setup, the radius of the diffraction disc will be less than 0.1m.

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