Question

If $v_{g}v_{x}andv_{m}$are the speed of gamma rays, X- rays and microwaves respectively in vacuum, then

• A. $v_{g} < v_{x} < v_{m}$
• B. $v_{g} > v > v_{m}$
• C. $v_{g} > v_{x} < v_{m}$
• D. $v_{g} = v_{x} = v_{m}$

Answer 1

Answer: (D)

$v_{g} = v_{x} = v_{m}$

Answer 2

: The speed of all electromagnetic waves is same in vacuum.