Question

Gamma rays are?
A- High energy electrons
B- Low energy electrons
C- High electromagnetic waves
D- High energy positrons

Answer 1

As the name suggests gamma rays, they have something to deal with the waves and all. In physics, we have either particle nature or wave nature but there are some things which exhibit both kinds of nature wave nature as well as particle nature and light is an example of that.

Complete step by step answer:
We want to define the gamma rays here. We know that gamma rays find their place in the electromagnetic spectrum at the last position having the wavelength in the range of picometres, so gamma rays are electromagnetic waves. An electromagnetic wave is produced by an accelerated charged particle and their production and existence were confirmed by the Hertz experiment. Since the electromagnetic waves are made of electric field vectors and magnetic field vectors which oscillates perpendicular to each other and also to the direction of propagation, so the options listed in (A), (B) and (D) cannot hold.
So, the correct option is (C) .

Note: Electromagnetic waves do not require any material medium to travel and they have the tendency to move in a straight line. Gamma rays are a kind of electromagnetic waves but they cannot be seen through the naked eye as they do not fall in visible spectra. They consist of photons and not of any charged particles. They do not get deflected in the presence of an external electric field or magnetic field.