Question

Which of the following is termed as bouncing of light into the same medium, from which the light ray is incident.
A. Refraction
B. Dispersion
C. Reflection
D. Scattering

Answer 1

Hint Reflection is a phenomena in which a ray of light incident on a shiny polished surface, such as a mirror, reflects back with the same angle into the same medium. A ray of light always travels in a straight line, so when it is incident on the surface at an acute angle and thus reflects in the same medium.

Complete step by step answer
Let us discuss all the options.
Refraction is a phenomenon in which a ray of light travels in a medium, incident on the boundary of two media and changes its direction with some angle while moving into the other medium.
In dispersion, a ray of white light while travelling into medium of different refractive index such as a prism splits into rays of different colors which constitutes the white light.
Reflection is a phenomenon in which a ray of light incident on a shiny polished surface, such as a mirror, reflects back with the same angle into the same medium. A ray of light always travels in a straight line, so when it is incident on the surface at an acute angle and thus reflects in the same medium.
Finally, scattering of light happens when a beam of light is scattered or deflected in many directions when it passes through a different medium due to its interaction with the particles of the medium.
Therefore, it is clear that the reflection is the phenomena in which the ray of light bounces back into the same medium from which it is incident.

Hence, option C is correct.

Note There is a basic rule of reflection that the angle at which the ray is incident on a surface reflects with the same angle into the same medium. The two angles are called angle of incidence and angle of reflection respectively. These angles are measured with respect to the normal which is an imaginary line perpendicular to the surface at which the ray is incident.