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Light from two coherent sources of the s...

Light from two coherent sources of the same amplitude A and wavelength `lambda` illuminates the screen. The intensity of the central maximum is `I_(0)`. If the sources were incoherent, the intensity at the same point will be

A

`4I_(0)`

B

`2I_(0)`

C

`I_(0)`

D

`(I_(0))/(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
The rays of light from two coherent sources superimpose each other on the screen forming alternate maxima and minima. If two non-coherent sources superimpose, there will be no maxima and minima, instead the intensity will be `(I_(0))/(2)` throughout.
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