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Worksheet: Refraction

Q1:

Find the speed of light in air. Use a value of 1.000293 for the refractive index of air.

  • A m/s
  • B m/s
  • C m/s
  • D m/s
  • E m/s

Q2:

The refractive index of water is 1.333. What is the speed of light in water?

  • A m/s
  • B m/s
  • C m/s
  • D m/s
  • E m/s

Q3:

The refractive index of glycerine is 1.473. What is the speed of light in glycerine?

  • A m/s
  • B m/s
  • C m/s
  • D m/s
  • E m/s

Q4:

The refractive index of crown glass is 1.52. What is the speed of light in crown glass?

  • A m/s
  • B m/s
  • C m/s
  • D m/s
  • E m/s

Q5:

Determine how far light travels underwater during a time interval of 1.50 µs. Use a value of 1.333 for the refractive index of water.

Q6:

Components of some computers communicate with each other through optical fibers having a refractive index of 1.55. What time in nanoseconds is required for a signal to travel 0.200 m through such a fiber?

Q7:

A light beam in air is incident on the surface of a pond with a refractive index of 1.333, making an angle of 20° with respect to the surface of the pond.

What is the angle of reflection?

  • A
  • B
  • C
  • D
  • E

What is the angle of refraction?

  • A
  • B
  • C
  • D
  • E

Q8:

The path of a light beam in air (refractive index 1.000293) goes from an angle of incidence of to an angle of refraction of when it enters a rectangular block of plastic. What is the index of refraction of the plastic?

Q9:

A pencil flashlight submerged in water sends a light beam toward the surface at an angle of incidence of from the water-air boundary. Find the angle of refraction in air. Use a value of 1.33 for the refractive index of water.

  • A
  • B
  • C
  • D
  • E

Q10:

A ray of light is shown going from air (refractive index of 1.00) through crown glass (refractive index of 1.52) into water (refractive index of 1.33), such as going into a fish tank. Calculate the amount the ray is displaced by the glass , given that the incident angle is and the glass is 1.00 cm thick.

Q11:

In which substance from this table is the speed of light m/s?

Medium
Gases at , 1 atm
Air 1.000293
Carbon dioxide 1.00045
Hydrogen 1.000139
Oxygen 1.000271
Liquids at
Benzene 1.501
Carbon disulfide 1.628
Carbon tetrachloride 1.461
Ethanol 1.361
Glycerine 1.473
Water, fresh 1.333
Solids at
Diamond 2.419
Fluorite 1.434
Glass, crown 1.52
Glass, flint 1.66
Ice (at ) 1.309
Polystyrene 1.49
Plexiglas 1.51
Quartz, crystalline 1.544
Quartz, fused 1.458
Sodium chloride 1.544
Zircon 1.923
  • A Fluorite
  • B Ethanol
  • C Plexiglas
  • D Ice at ( )
  • E Benzene