Question

If Vg, Vx and Vm are the speeds of gamma rays, X-rays and microwaves respectively in vaccum, then

Answer 1

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If Vg, Vx and Vm are the speeds of gamma rays, X-rays and microwaves respectively in vaccum, then

All Electronic waves travel in Space or Vacuum with the speed of Light

⇒$2X10^{8} m/s$

Therefore, the Velocities are Equal Vg = Vx = Vm

Answer 2

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we know that,

increasing order of frequencies of spectrum is given by,

Radio wave < micro wave < infrared wave < visible rays < ultraviolet rays < x-rays < gamma rays < cosmic rays

and,

order of wavelengths of spectrum is given by,

Radio wave > micro wave > infrared wave > visible rays > ultraviolet rays > x-rays > gamma rays > cosmic rays

but,

we know that,

speed of each radiation equals $3×{10}^{8}$ m/s


now,

because all radiations are component of electromagnetic wave

and

speed of electromagnetic wave is $3×{10}^{8}$ m/s in vaccum.

Hence,

Vg = Vx = Vm = $3×{10}^{8}$ m/s