Reflection and Refraction of Light

Light strikes a flat mirror at an angle of incidence of 30°. What is the angle of reflection?

• 15°

• 30°

• 60°

• 90°

The law of reflection states that...

• The angle of incidence is always less than the angle of reflection

• The angle of incidence is always greater than the angle of reflection

• The angle of incidence is equal to the angle of reflection

• The angle of incidence and angle of reflection are always 90°

Which is a characteristic of diffuse reflection?

• The reflecting surface is smooth and flat

• Angle of incidence = angle of reflection

• The reflecting surface is rough

• Produces a clear image

Refraction of light occurs because...

• The change in direction of light upon hitting a mirror

• Light moves from one medium to another with the same refractive index

• Light passes through two media with different densities

• Light strikes a metal surface

Light moves from air into water. The direction of the ray will...

• Be bent away from the normal line

• Be bent towards the normal line

• Not experience refraction

• Be completely reflected

If the refractive index of glass is 1.5 and the refractive index of air is 1, then the ray from air to glass will...

• Not experience refraction

• Be bent towards the normal line

• Be bent away from the normal line

• Be perfectly reflected

The image formed by a flat mirror is...

• Real, inverted, and enlarged

• Virtual, upright, and the same size

• Real, upright, and reduced

• Virtual, inverted, and enlarged

The condition for perfect reflection in refraction is...

• The angle of incidence is less than the critical angle

• The angle of incidence is equal to the critical angle

• The angle of incidence is greater than the critical angle

• The angle of incidence is equal to 0°

The optical device that works based on the refraction of light is...

• Flat mirror

• Prism

• Concave mirror

• Mirror microscope

The phenomenon of a pencil appearing broken when placed in water is due to...

• Reflection of light

• Diffraction of light

• Interference of light

• Refraction of light