X-Refraction of light

This image is an example of …………..

• Reflection phenomenon

• Diffusion phenomenon

• Refraction phenomenon

Refraction is when light__________.

• Is bounced by an object or material.

• Changes speed as it travels in different materials which causes bending.

• When light speeds up to over 300,000 km/s

Light emerging from water to air will bend ______ due to the change of speed as it crosses the boundary.

• toward the normal

• away from the normal

• along the normal

A refracted wave has the same wavelength as an incident wave.

• true

• false

The speed of light in vacuum is 3x10⁸m/s and the speed of light in diamond is 1.24x10⁸m/s. the index of refraction in diamond is ……….

• 2.42

• 0.42

• 1

For light to pass from medium (1) of index n₁ to medium (2) of index n₂ where n₂ < n₁, the angle of incidence must be ……………… than the refracted angle.

• greater

• smaller

• equal

ABC is a section of a right isosceles prism whose index of refraction is n = 1.5. The path of the incident light ………...

• 
• 
• 

Which of the following factors change when light refracts?

• Frequency only

• Wavelength only

• Speed and frequency

• Wavelength and speed

A straight glass rod appears to bend when placed in a beaker of water, as shown in the diagram below. What is the best explanation for this phenomenon?

• The water is warmer than the air

• Light travels faster in water than in air

• Light is reflected at the air-water interface

• Light is refracted as it crosses the air-water

  interface

Light passes into a glass block. Which is the angle of refraction?

• A

• B

• C

• D