Chapter 7 Multiple choice

Light has ......... nature.

• only particle

• only wave 🌊

• both particle and wave

The ........ are particles of light.

• proton

• photons

• positrons

The bending of ruler partly immersed in water is due to......... of light.

• reflection

• refraction

• diffraction

......... wave can travel through vacuum.

• Light

• Sound

• Water

The velocity of light is ......... in a more optically dense medium.

• greater

• smaller

• equal

Splitting of white light into different colour-band is called......... of light.

• refraction

• reflection

• dispersion

The concept of........... is used in cutting the faces of diamond.

• reflection

• refraction

• total internal reflection

The refractive index of glass is ......... that of air.

• greater than

• smaller than

• equal

The refractive index of diamond is ...........that of glass.

• greater than

• smaller than

• equal

The refractive index of the prism for ........... colour is the smallest.

• violet

• red

• yellow