IS_Section Quiz_14.4_e

When the angle of incidence is larger than the critical angle, total internal reflection must occur.

• True

• False

When the angle of incidence is smaller than the critical angle, total internal reflection must not occur.

• True

• False

A material with a larger refractive index has a smaller critical angle.

• True

• False

When a light ray travels from air to water, total internal reflection must not occur.

• True

• False

When a light ray travels from water to air, total internal reflection must occur.

• True

• False

When total internal reflection occurs, the angle of incidence is larger than the angle of reflection.

• True

• False

When total internal reflection occurs, the angle of incidence is equal to the critical angle.

• True

• False

The critical angle of water is larger than the critical angle of glass.

• True

• False

Optical fibres are used to transmit signals and data in telecommunications.

• True

• False

A diamond sparkles because most light inside it can undergo total internal reflection.

• True

• False