STANDARDPhysics-Wave Optics
STANDARD Physics Interference MCQ Question
Type: MCQ-conceptual-Medium-Class 12
Light from two coherent sources of the same amplitude A and wavelength λ, illuminates the screen. The intensity of the central maximum is I₀. If the sources were incoherent, the intensity at the same point will be
A
4I₀
B
2I₀
C
I₀
D
I₀/2
Correct Answer
Option B
Detailed Explanation
For incoherent sources, the intensities add directly. Thus, I = I₁ + I₂ = 2I₀.
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