Physics-Interference

NEET Physics Interference MCQ Question

Type: MCQ-numerical-Medium-Class 12

In Young's Double Slit Experiment, if the slit separation d is 0.025 mm, the distance between the slits and the screen D is 5 cm, and the wavelength of light used is 5 × 10^–5 cm, what is the distance x from the central maximum to the first order bright fringe?

A

0.1 cm

B

0.5 cm

C

0.25 cm

D

0.05 cm

Correct Answer

Option A

Detailed Explanation

Using the formula x = (n * λ * D) / d for n = 1, the distance x is calculated as (1 * 5 × 10^–5 cm * 5 cm) / 0.025 mm = 0.1 cm.

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