Question

Question 9 (1 point)

If a crest with an amplitude of 7 cm interferes with a trough with an amplitude of 10 cm, the resulting wave has an amplitude of:

Question 9 options:

17 cm

-17 cm

3 cm

-3 cm

Question 10 (1 point)

Light travelling in water is incident on air refracts at an angle of 27o. The angle of incidence is:

Question 10 options:

There is insufficient information to answer the question.

20o

0.34o

37o

Question 11 (1 point)

A critical angle of 24.4o applies to:

Question 11 options:

Light travelling from air into diamond.

Light travelling from diamond into air.

Light travelling from water into diamond.

Light travelling from diamond into water.

Question 12 (1 point)

Light incident on air from crown glass undergoes complete polarization at:

Question 12 options:

56.3o

33.7o

41.8o

None of the options are correct.

Question 13 (1 point)

At EXACTLY the critical angle:

Question 13 options:

All light reflects back into the n1 medium.

All light reflects back into the n2 medium.

Part of the light reflects back into the n1 medium, the remainder travels along the boundary between the two mediums.

Part of the light reflects back into the n2 medium, the remainder travels along the boundary between the two mediums.

Question 14 (1 point)

Light incident on a polarizer analyser combination allows 15.0% of the incident light to pass through. The angle between their axes is:

Question 14 options:

56.8o

67.2o

54.8o

81o

Question 15 (1 point)

Light travelling in air is incident on a soap bubble. If the path difference through the soap bubble is 2.5:

Question 15 options:

Constructive interference will occur.

Destructive interference will occur.

Partial interference will occur.

There is insufficient information to answer the question.

Question 16 (1 point)

Which of the following factors determine the type of interference seen on thin films:

Question 16 options:

The indexes of refraction of the mediums involved.

The wavelength of light.

The thickness of the film.

All of the options are true.

Question 17 (1 point)

In a double slit experiment, what happens when the wavelength increases, assuming all other variables remain constant?

Question 17 options:

The number of constructive and destructive interference lines increases.

The number of constructive and destructive interference lines decreases.

The number of constructive and destructive interference lines stays the same.

The constructive and destructive interference lines fade.

Question 18 (1 point)

In a single slit experiment, the central maximum is:

Question 18 options:

The same size as all of the other maximums.

Twice the size of the other maximums.

Half the size of the other maximums.

Just slightly larger than the other maximums.

Question 19 (1 point)

Brehmsstrahlung radiation:

Question 19 options:

Occurs when fast electrons accelerate in a metal target.

Occurs when electrons drop back down to lower energy levels.

Occurs when fast moving electrons break apart atoms.

None of the options are correct.

Question 20 (1 point)

In radio wave production, the frequency of the wave is:

Question 20 options:

Equal to the oscillating frequency of the electron.

Double the oscillating frequency of the electron.

Half the oscillation frequency of the electron.

Independent of the oscillation frequency of the electron.

Answer 1