1
Q
define critical angle
A
defined as the angle of incidence in the optically denser medium for which the angle of refraction in the less dense medium is less than 90 degrees
2
Q
speed of light in air
A
3x 10⁸
3
Q
how to find refractive index with angle
A
n 1 sin 1 = n2 sin 2
4
Q
how to find refractive index with speed of light
A
n= c/v
5
Q
what is c and v
A
c= speed of light in vacuum v is speed of light in medium
6
Q
define TIR
A
Total internal reflection (TIR) occurs when the angle of incidence is greater than the critical angle, and the ray is travelling from a denser material into a less dense material.
7
Q
Characteristics of real images
A
physics
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