An electron is moving with a velocity of 0.85c in the same direction as that of

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An electron is moving with a velocity of 0.85c in the same direction as that of a moving photon.
The relative velocity of the electron with respect to photon is

Options:

A . c

B . -c

C . 0.15c

D . -0.15c

Answer: Option B

-NA-

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