Free Printable 4.3 Wave Characteristics

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4.3 Wave Characteristics

Total questions: 20

Worksheet time: 16mins

Name

Class

Date

Two transverse waves overlap. Crests overlap with crests. Troughs overlap with troughs. The waves are

In-phase

Out-of-phase

In-synchronicity

Out-of-synchronicity

Two transverse waves overlap. Crests overlap with troughs. Troughs overlap with crests. The waves are

In-phase

Out-of-phase

In-synchronicity

Out-of-synchronicity

Look at the diagram. At which positions will the overlapping waves have the most constructive interference?

Positions #1 & #5

Positions #2 & #3

Positions #3 & #4

Positions #4 & #5

If waves overlap and are out of phase, how will that affect the resultant wave?

Decrease the amplitude

Increase the amplitude

Decrease the frequency

Increase the frequency

A Polarizing filter is used to reduce glare on reflective surfaces including glass, windows, and water.

True

False

light waves can be polarized as they are:

transverse

of high frequency

longitudinal

reflected

Properties of waves are

I. polarization

II. diffraction

III. refraction

Which of these properties apply to sound waves?

I and II

II and III

I and III

All of them

Approximately how much light is blocked by two polarizing filters that are perpendicular to each other?

50%

75%

100%

Unit for measuring Sound Intensity

A. Joules

B. Lambda (λ)

C. Watts / Metre² or Decibel

D. Hertz

10.

How does light behave as it enters these mediums?

continue its path as straight line.

bends toward the normal

bends away from the normal

reflects

11.

Swimming pools and the ocean look shallower than they really are due to:

reflection

dispersion

refraction

total internal reflection

12.

The formula to calculate the refractive index is

n=cv

n=v/c

n=c/v

v=nc

13.

According to the Law of reflection, a light ray striking a mirror

continues moving through the mirror in the same direction

moves into the mirror at a slightly different angle

bounces off the mirror toward the direction it came from

bounces off the mirror at the same angle it hits.

14.

Approximately how much light is blocked by two polarizing filters that are parallel to each other?

50%

75%

100%

15.

Approximately how much light is blocked by a single polarizing filter?

50%

75%

100%

16.

Unpolarised light of intensity I₀ is incident on a polariser with a vertical transmission axis. The transmitted light is incident on a sheet of material X. After transmission through X the intensity of the light is I₀/2.

It is suggested that X could be

I. a polarizer with vertical transmission axis

II. a polarizer with horizontal transmission axis

III. non polarizing glass.

Which of the above suggestions is/are correct?

I and III only

I only

II only

I and II only

17.

Two polarizing filters are set up so the transmitted light is at a maximum intensity.

Through which angle should polariser 2 be rotated so that no light is transmitted?

45º

60º

90º

180º

18.

Polarized light of intensity I₀ is incident on a polarising filter. The angle between the plane of polarisation of the incident light and the transmission plane of the polariser is θ. Which graph shows how the intensity I of the light transmitted through the polariser varies with θ?

19.

A beam of light strikes a glass block with refractive index of 1.52, at an angle of 5°, what is the angle of refraction?

7.51

0.087

0.13

3.29

20.

What is the angle of incidence on a glass block with refractive index 1.52 if the angle of refraction is 32°?

52.6

20.7

32.0

74.3

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4.3 Wave Characteristics

Total questions: 20

Worksheet time: 16mins

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