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In Young's double slit experiment the ra...

In Young's double slit experiment the ratio of intensitities of bright and dark fringes is 9 this means that

A

the intensities at the screen due to the slits are 5 and 4 units

B

the intensities at the screen due to the two slits are 4 and 1 units

C

the amplitude ratio of the individual waves is 3

D

the amplitude ratio of the individual waves is 2

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Assertion:- When a width of one of the slits of Young's double slit experiment is double that of the other the brighter frings are nine times brighter then the dark fringes. Reason:- The amplitudes of the wave is proportional to the width of the slit.

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