Question

Which is the correct set of ionising radiations?

• A. Gamma rays, X-rays, short wavelength UV rays
• B. Gamma rays, long wavelength UV rays, alpha particles
• C. Gamma rays, UV rays, X-rays
• D. Gamma rays, radiowaves, X-rays

Answer 1

The correct option is A Gamma rays, X-rays, short wavelength UV rays

Ionising radiation are high energy electromagnetic waves. These have enough energyto ionise or remove electrons from an atom. The electromagnetic spectrum includes radiowaves, microwaves, infrared rays, visible light, ultraviolet rays, X-rays and gamma rays. Of these, only the short wavelength ultraviolet rays, X-rays and gamma rays are ionising. Since these have shorter wavelengths than the rest of the members in the electromagnetic spectrum, they possess highest amounts of energy.