Physics-Young's Double Slit

NEET Physics Young's Double Slit MCQ Question

Type: MCQ-numerical-Medium-Class 12

In Young's Double Slit Experiment, if the distance between the slits is 0.5 mm and the distance to the screen is 1.5 m, what is the fringe width for light of wavelength 589 nm?

A

767 mm

B

0.589 mm

C

0.176 mm

D

589 mm

Correct Answer

Option A

Detailed Explanation

The fringe width (β) can be calculated using the formula β = λD/d, where λ is the wavelength, D is the distance to the screen, and d is the distance between the slits. Substituting the given values, β = (589 × 10^-9 m)(1.5 m)/(0.5 × 10^-3 m) = 1.767 mm.

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