Q .     IF `v_s, v_x` and `v_m` are the speeds of gamma rays, X-rays and microwaves respectively in vacuum, then:

AIIMS 2009
A

`v_s > v_x > v_m`

B

`v_s < v_x < v_m`

C

`v_s > v_x > v_m`

D

`v_s = v_x = v_m`

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