Question

A beam of light is made up of?
A. bundles of rays
B. millions of droplets
C. clusters
D. None of these

Answer 1

Hint: Light or visible light is an electromagnetic radiation. An electromagnetic radiation is produced by an accelerated charged particle or by a charged particle which is in vibration and electromagnetic rays have their unique properties which makes them stand out of all the radiations that exist in nature.

Complete step by step answer:
We are given a beam of light but first of all we should know what light is. Light is an electromagnetic radiation which has oscillating electric and magnetic fields which are perpendicular to each other and also, to the direction of propagation. A photon is the smallest quantity of energy and since, light is a form of energy light can also be described in terms of a stream of photons. A ray is defined as the single light line travelling in a direction and if we combine all the light rays travelling in that direction then we get a beam of light, so a beam of light is made up of bundles of rays.

So, the correct answer is “Option A”.

Note:
A photon is the smallest quantity quantum of energy which can be transported, and light travelled in discrete quanta that was the origins of Quantum Theory. Photons have zero rest mass and that is why they can be freely created and freely destroyed and do not violate the law of conservation of energy.