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

In Young's double slit experiment the interference pattern is found to have an intensity ratio between bright and dark fringes as 9. This implies

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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