Student Login

Home›Chapters›Wave Optics PYQs›Superposition, Coherence & Intensity›Question 1

MHT CET 2026 (17 Apr, Shift 2) · Superposition, Coherence & Intensity

Superposition, Coherence & Intensity question from MHT CET 2026 (17 Apr, Shift 2)

Q1MHT CET 2026 · 17 APR · SHIFT 2Easy

Superposition, Coherence & Intensity

For obtaining maximum contrast between the bright and dark fringes in an interference pattern, the intensities of the two light coherent sources should be

Show answer and solution

Answer: (c)

$I_{min} = (\sqrt{I_1} - \sqrt{I_2})^2$ and $I_{max} = (\sqrt{I_1} + \sqrt{I_2})^2$ .
Best contrast needs perfectly dark fringes, $I_{min} = 0$ , which happens only when $I_1 = I_2$ .
So the answer is (c) equal.

Report a mistake

More questions on Superposition, Coherence & Intensity

In interference and diffraction, the light energy is redistributed. If it reduces in one…NEET 2026
In Young's double slit experiment, for the n th dark fringe ( n = 1, 2, 3,) the phase…MHT CET 2026 (19 Apr, Shift 1)
In Young's experiment, the intensity ratio of the maxima and minima in an interference…MHT CET 2026 (17 Apr, Shift 2)
Two light waves amplitudes in the ratio 3: 1 produce interference. The ratio of the…MHT CET 2026 (11 Apr, Shift 1)
The interference pattern is obtained with two coherent light sources of intensity ( I₁…MHT CET 2026 (20 May, Shift 1)
At two points P and Q on the screen in Young's double slit experiment, waves from slits…MHT CET 2026 (15 May, Shift 2)
Interference fringes are produced on a screen by using two light sources of intensities I…MHT CET 2026 (14 May, Shift 2)
The ratio of intensity at the centre of a bright fringe to the intensity at a point…MHT CET 2026 (13 May, Shift 1)