Student Login

Home›Chapters›Wave Optics PYQs›Superposition, Coherence & Intensity›Question 76

JEE Main 2021 (27 Aug, Shift 2) · Superposition, Coherence & Intensity

Superposition, Coherence & Intensity question from JEE Main 2021 (27 Aug, Shift 2)

Q76JEE Main 2021 · 27 AUG · SHIFT 2Easy

Superposition, Coherence & Intensity

The light waves from two coherent sources have same intensity I1 = I2 = I0. In interference pattern the intensity of light at minima is zero. What will be the intensity of light at maxima?

Show answer and solution

Answer: (d)

$I_{max} = (\sqrt{I_1}+\sqrt{I_2})^2$
With $I_1 = I_2 = I_0$ : $I_{max} = (2\sqrt{I_0})^2 = 4I_0$ (and $I_{min} = 0$ ).
So the answer is (d) $4I_0$ .

Report a mistake

More questions on Superposition, Coherence & Intensity

Two coherent light sources having intensity in the ratio 2x produce an interference…JEE Main 2021 (25 Feb, Shift 1)
In a Young's double slit experiment, the width of the one of the slit is three times the…JEE Main 2021 (24 Feb, Shift 1)
The width of one of the two slits in a Young's double slit experiment is three times the…JEE Main 2021 (1 Sep, Shift 2)
Two beams of light having intensities I and 4I interfere to produce a fringe pattern on a…MHT CET 2021 (24 Sep, Shift 1)
In Young's double slit experiment, the intensity at a point where path difference is…MHT CET 2021 (23 Sep, Shift 2)
In Young's double slit experiment using monochromatic light of wavelength ' λ ', the…MHT CET 2021 (22 Sep, Shift 2)
In Young's double slit experiment, the intensity at a point where the path difference is…MHT CET 2021 (20 Sep, Shift 2)
Two coherent sources of light interfere and produce fringe pattern on a screen. For…NEET 2020 (Phase 2)