Chapter 5

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

• reflection

• refraction

..... are particles of light.

• Photons

• Corpuscles

The criticle angle of ice is ... than that in diamond.

• larger

• smaller

Light has both ... natures.

• particle and wave

• duality

For refraction to take place at least ... media are required.

• two

• one

The total internal reflection can take place for ... angle of incidence.

The wave length of yellow light is ... than that of orange light.

The concept of .... is used in cuttings the facets of diamond.

• total internal reflection

• refraction of light

When white light is dispersed by a prism the ... is deviated least.

• violet color

• red color

For total inter reflection occur, the angle of incidence must be .... than the criticle angle.

• greater

• smaller