JEE PHYSICS MCQ: WAVE OPTICS

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Application +4 | -1

In young's double slit experiment, the two slits are coherent sources of equal amplitude and wave length

\lambda

. In another experiment with the same setup, two slits are sources of equal amplitude '

A

' and wavelength

\lambda

, but are incoherent. The ratio of intensities of light at the midpoint of the screen in the first case to that in second case, is

View answer and explanation

Correct option: A

2: 1

Option A (

2: 1

) is correct because the ratio of intensities is found by comparing the resultant intensity of coherent sources to that of incoherent sources at the midpoint.

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