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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?

Asked in JEE Main 27th Aug 2nd Shift 2021 · Intensity and coherent sources

• (1) I₀
• (2) 2I₀
• (3) 4I₀
• (4) 5I₀

Step-by-step solution

Why the other options are wrong

• (1) Ignores superposition.
• (2) Adds intensities as for incoherent sources.
• (4) Adds an extra I₀ by a slip.

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