GENERAL GEOLOGY

Detailed explanation-1: -Total Internal Reflection takes place when light travels from denser to rarer and also the angle of incidence should be greater than critical angle.

Detailed explanation-2: -The speed of light rises when it moves from a denser to a more rare medium, which causes it to bend away from its typical path. As a result, light moves faster while moving from a denser to a rarer medium.

Detailed explanation-3: -Light is refracted (bent) only at the interface between two transparent materials of different density. Light passing from a less dense to a more dense medium bends toward the normal. Light passing from a more dense to a less dense medium bends away from the normal.

Detailed explanation-4: -If the angle of incidence is greater than the critical angle, the ray will be reflected back to the same medium without undergoing refraction. This is known as total internal reflection.

Detailed explanation-5: -The critical angle (c) is the angle of incidence for which the angle of refraction is 90°. Beyond the critical angle, 100% of the incident light is reflected back into the same medium.