State the laws of refraction of light.
Refraction of Light at Plane Surfaces
Original Khojo Papers practice question — not from a past board paper.
1.5
No citable source has been recorded for this record. Treat it as practice material, not as fact.
n = c ÷ v = 3 × 108 ÷ 2 × 108 = 1.5.
From the same topic and chapter, at a similar level.
State the laws of refraction of light.
Refraction of Light at Plane Surfaces
The refractive index of a medium is 1.5. The speed of light in that medium is: (speed of light in vacuum = 3 × 108 m s−1)
Refraction of Light at Plane Surfaces
A ray of light travelling in air strikes a glass surface at an angle of incidence of 60°. If the refractive index of glass is 1.5, find the sine of the angle of refraction.
Refraction of Light at Plane Surfaces
The refractive index of glass is 1.5 and the speed of light in vacuum is 3 × 108 m s−1. Calculate the speed of light in glass.
Refraction of Light at Plane Surfaces
The critical angle for a certain medium is 30°. Calculate its refractive index.
Refraction of Light at Plane Surfaces
State the two conditions necessary for total internal reflection to take place.
Refraction of Light at Plane Surfaces