light

Question 1

refraction

Answer 1

the bending of light from one medium to another

Question 2

laws of refraction

Answer 2

1. incident ray, refracted ray and normal are on the same plane
2. sine I/sine R is a constant

Question 3

refractive index

Answer 3

sine I/sine R = 1/sine C, real depth/ apparent death =C1/C2

Question 4

critical angle

Answer 4

the angle whose angle of incidence is 90 when light goes from a denser to a rarer medium

Question 5

total internal reflection

Answer 5

when light travelling from a denser to a rarer medium strikes the second medium with an angle of incidence greater than the critical angle, it is reflected back