Question

When a light ray makes an angle of 90° while entering a glass slab from air, it a) bends towards normal b) goes away from normal c) goes straight without bending d) it returns back into air

Answer 1

If a ray of light traveling through the air strikes a glass slab at an angle of 30°, what is the angle of refraction if the refractive index of the glass is 1.5?


Medium1 is if we air then i=30°

Medium 2 is if we consider r=?

According to Snell's law

u1*sini =u2*sinr

1*sin30°=1.5sinr

r=19.47°

Answer 2

c) goes straight without bending