Refraction

Refraction

Poll

Which is more dense?

• air

• water

Multiple Choice

If light passes from water to air, which of the following gives a good value for the angle of incidence if the angle of refraction is 40 degrees?

• 45

• 60

• 70

• 30

Refraction

Review

Multiple Choice

A student placed a pencil in a cup of water. The pencil appears broken because light

• always travels in a straight line.

• bends when it passes through water.

• makes the water in the glass evaporate.

• reflects the pencil on the water's surface.

Multiple Choice

The velocity of light in vacuum is _______ m/s

• 3x10⁸
• 3x10¹²
• 3x10⁶
• 3x10¹⁰

Multiple Choice

How is light affected by an increase in the index of refraction?

• Its frequency increases
• Its frequency decreases
• Its speed increases
• Its speed decreases

Multiple Choice

Based on the image, which medium has a larger index of refraction?

• Medium 1 has a larger index of refraction.

• Medium 2 has a larger index of refraction.

• Both mediums have the same index of refraction.

• Cannot be determined.

Multiple Choice

Glass has a _____________ index of refraction than air.

• Equal
• Greater
• Less
• Impossible to say

Multiple Choice

When light passes at an angle to the normal from one medium into another in which its speed is higher

• it is bent toward the normal.

• it always lies along the normal.

• it is unaffected.

• it is bent away from the normal.

Multiple Choice

Light travels from air (n = 1.00) into a "mystery" material. The incident ray of light hits the surface at angle of 43^o and the refracted ray enters the mystery material at an angle of 27^o. What is the index of refraction of the mystery material? n₁sin(Θ₁) = n₂sin(Θ₂)

• 1.5

• 1.0

• 0.67

• 2.1