Light through different media

Question 1 of 10

Light travels slowest in

Question 2 of 10

Which colour of light is bent most by a glass prism?

Question 3 of 10

Optical fibres carry light by

Question 4 of 10

The refractive index of glass in which light travels at 2 × 10⁸ m/s (c = 3 × 10⁸ m/s) is

Question 5 of 10

A red shirt looks black under pure blue light because it

Question 6 of 10

A rainbow is formed by

Question 7 of 10

Light of wavelength 600 nm in air enters glass (n = 1.5). Its wavelength in glass is

Question 8 of 10

A swimming pool looks shallower than it really is because of

Question 9 of 10

The speed of light in water (n = 1.33) is about

Question 10 of 10

The critical angle of a glass is 42°. Total internal reflection occurs when light inside the glass hits the surface at