Quiz on Light Reflection and Refraction

What is the primary function of a periscope in submarines?

• To measure depth
• To see above the water surface
• To communicate with other submarines
• To navigate underwater

What principle explains how light reflects off the mirrors in a periscope?

• Angle of incidence equals angle of reflection
• Law of conservation of energy
• Principle of superposition
• Snell's law

When light reflects off a smooth surface, what type of reflection occurs?

• Diffuse reflection
• Regular reflection
• Scattered reflection
• Total internal reflection

What happens to light when it reflects off a rough surface?

• It bends towards the normal
• It scatters in all directions
• It disappears
• It speeds up

In the context of refraction, what happens to the speed of light when it moves from a rarer medium to a denser medium?

• It increases
• It decreases
• It remains constant
• It fluctuates

Which of the following statements is true about the frequency of light when it passes from one medium to another?

• It increases
• It decreases
• It remains the same
• It becomes zero

What is the angle of incidence?

• The angle between the incident ray and the surface
• The angle between the refracted ray and the normal
• The angle between the incident ray and the normal
• The angle between the reflected ray and the surface

When light travels from a dense medium to a rarer medium, what happens to the angle of refraction?

• It becomes smaller than the angle of incidence
• It becomes larger than the angle of incidence
• It remains the same
• It cannot be determined

If the angle of incidence is 30 degrees and light is moving from air to glass, what can be inferred about the angle of refraction?

• It will be greater than 30 degrees
• It will be less than 30 degrees
• It will be equal to 30 degrees
• It cannot be determined

What is the effect of a rough surface on light reflection?

• It creates clear images
• It scatters light
• It absorbs light
• It reflects light in a straight line