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In Young's double - slit experiment if y...

In Young's double - slit experiment if yellow light is replaced by blue light, the interference fringes become

A

remain unchanged

B

become wider

C

disappear

D

become narrower

Text Solution

Verified by Experts

The correct Answer is:
D
Width of diffraction bands is directly proportional to the wavelength of light used. Thus, if yellow light is replaced by blue light, different bands become narrower because `lamda_("blue") lt lamda_("yellow")`
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