Find the angle at which total internal refraction takes place when light is going from glass to air.
The angle at which this takes place is called the critical angle.
We can apply Snell's law in this situation: n1 sin C1 = n2 sin (90deg)
sin C = n2 / n1
If the second medium is air, then n2 ~1, so sin C = 1/ n1
CT
Related Physics A Level answers
All answers ▸a ball is dropped from rest off a cliff of height 50m, determine the final velocity of the ball assuming no air resistance.
Two pendulums consist of a massless rigid rod of equal length attached to a small sphere of equal radius, with one sphere hollow for one pendulum and the other solid. Each pendulum undergoes damped SHM. Which pendulum has the largest time period?
A yacht is sailing through water that is flowing due west at 2m/s. The velocity of the yacht relative to the water is 6m/s due south. The yacht has a resultant velocity of V m/s on a bearing of theta. Find V and theta
A stone is thrown horizontally at 5m/s from a platform 10m above ground. Find time till impact with ground.