Question

The ratio of velocity of X-rays to that of gamma rays is ________.

• A. $<1$
• B. $>1$
• C. $1$
• D. depends upon the ratio of their frequencies

Answer 1

The correct option is C $1$

The ratio of velocity of X-rays to that of gamma rays is 1.

X-rays are electromagnetic waves with wavelengths in the range of 0.01 to 10 nanometers, corresponding to frequencies in the range 30 petahertz to 30 exahertz (3×1016 Hz to 3×1019 Hz) and energies in the range 100 eV to 100 keV. They are shorter in wavelength than UV rays and longer than gamma rays.