Question: A monochromatic source emitting radiation with a certain frequency moves with a velocity v away from a stationary observer A. It is moving towards

A monochromatic source emitting radiation with a certain frequency moves with a

A monochromatic source emitting radiation with a certain frequency moves with a velocity v away from a stationary observer A. It is moving towards another observer B (also at rest) along a line joining the two. The frequencies of the radiation recorded by A and B are V, and V. VB, respectively. If the ratio: = 7, then the value of v/c is (a) 1/2 (b) 1/4 (c) 3/4 (d) 3/2

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