Question

The bouncing of a beam of light from a polished surface in some other direction is called -
A. refraction
B. reflection
C. dispersion
D. scattering

Answer 1

Hint: We are asked to name the process where the bouncing of a beam of light from a polished surface in some other direction happens. We can start by defining all the four processes given as the options and see which one suits the process given in the question given in the question thus arriving at the right answer for this question.

Complete answer:
Refraction of light is the phenomenon of bending of light or the deviation of the motion of light from rectilinear motion. Refraction happens when a ray of light comes in contact with a surface that has a different refractive index than the medium that the light ray travels in.Reflection of light is the phenomenon in which light rays falling on a smooth polished surface bounces back or is sent into the same medium.

Dispersion is the phenomenon of splitting of white light into its component colours (Violet, Indigo, Blue, Green, Yellow, Orange, and Red) on passing through a glass prism.
Scattering of light means to throw light in various random directions. Light is scattered when it falls on various types of suspended particles in is path

Therefore, the correct answer is option B.

Note: There are laws governing reflection and they are as follows:
-The incident ray, the reflected ray and the normal to the reflection surface at the point of the incidence lie in the same plane.
-The angle which the incident ray makes with the normal is equal to the angle which the reflected ray makes to the same normal.
-The reflected ray and the incident ray are on the opposite sides of the normal