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In a given direction the intensities of ...

In a given direction the intensities of the scattered light by a scattering substance for two beams of light are in the ratio of `256:81` The ratio of the frequency of the first beam to the frequency of the second beam is

A

`2 : 1`

B

`64 : 27`

C

`1 : 2`

D

`64 : 127`.

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