JAMB - Physics (1993 - No. 21)
A beam of light is incident from air to water at an angle of 30oC. Find the angle of refraction if the refractive index of water is \(\frac{4}{3}\)
15oC
18oC
22oC
24oC
Vysvetlenie
\(\frac{4}{3}\) = \(\frac{sin30}{sinr}\)
r = 22oC
r = 22oC