Question

Visible light passing through a circular hole forms a diffraction disc of radius 0.1 mm on a screen. If an X-ray is passed through the same setup, the radius of the diffraction disc will be
(a) zero
(b) < 0.1 mm
(c) 0.1 mm
(d) > 0.1 m

Answer 1

When the x-rays pass through the same setup, the diffraction disc’s radius becomes (b) < 0.1 mm.

EXPLANATION:

• It is to be understood that the diffraction disc’s radius is directly proportional to the light’s wavelength, which is used to the provided hole.

• We should also know that the x-ray’s wavelength is not more than the visible light’s wavelength. When the x-ray passes via the same set up, the diffraction disc’s radius will not be more than 0.1 m.