Light energy

Question 1 of 10

A converging lens is used to correct

Question 2 of 10

The refractive index of a medium in which light travels at 2.25 × 10⁸ m/s is (c = 3 × 10⁸ m/s)

Question 3 of 10

A short-sighted person sees distant objects clearly with

Question 4 of 10

An object 20 cm from a convex lens of focal length 10 cm forms an image

Question 5 of 10

White light splits into colours when passed through a prism. This is

Question 6 of 10

The angle of incidence equals the angle of

Question 7 of 10

A periscope uses

Question 8 of 10

White light is split into colours by a prism because of

Question 9 of 10

A pencil standing in a glass of water looks bent at the surface. This is caused by

Question 10 of 10

A rainbow forms when sunlight is