Physics-Interference
NEET Physics Interference MCQ Question
Type: MCQ-numerical-Easy-Class 12
In a double-slit experiment with slit separation d = 0.025 mm, screen distance D = 5 cm, and light wavelength λ = 5 × 10^-5 cm, what is the distance from the central maximum to the first-order bright fringe on the screen?
A
0.1 cm
B
1 cm
C
0.5 cm
D
0.05 cm
Correct Answer
Option A
Detailed Explanation
The distance from the central maximum to the first-order bright fringe is given by x = nDλ/d for n = 1. Substituting the values, x = (1)(5 cm)(5 × 10^-5 cm)/(0.025 mm) = 0.1 cm.
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