Interference
Standing Waves
Resonance
Diffraction
Doppler Effect
Reflection
Potpourri
100

Two waves having the same amplitude and the same frequency pass simultaneously through a uniform medium. Maximum destructive interference occurs when the phase difference between the two waves is

  1. 0°
  2. 90°
  3. 180°
  4. 360°

C. 180°

100

The superposition of two waves traveling in the same medium produces a standing wave pattern if the two waves have

  1. the same frequency, the same amplitude, and travel in the same direction
  2. the same frequency, the same amplitude, and travel in opposite directions
  3. the same frequency, different amplitudes, and travel in the same direction
  4. the same frequency, different amplitudes, and travel in opposite directions


B. the same frequency, the same amplitude, and travel in opposite directions

100

Playing a certain musical note on a trumpet causes the spring on the bottom of a nearby snare drum to vibrate. This phenomenon is an example of

  1. resonance
  2. refraction
  3. reflection
  4. diffraction

A. resonance

100

As viewed from Earth, the light from a star has lower frequencies than the light emitted by the star because the star is

  1. moving toward Earth
  2. moving away from Earth
  3. stationary

B. moving away from Earth

100

What is the angle of reflection?

600

100

Which phenomenon represents a wave spreading out behind a barrier as the wave passes by the edge of the barrier?

  1. diffraction

  2. refraction

  3. reflection

  4. interference


diffraction

200

When the two pulses meet at P, the vertical displacement of the string at P will be ?

0

200

What is the total number of antinodes on the standing wave in the diagram?

3

200

A wave of constant wavelength diffracts as it passes through an opening in a barrier. As the size of the opening is increased, the diffraction effects

  1. decrease
  2. increase
  3. remain the same

A decrease

200

The Doppler effect is best described as the

  1. bending of waves as they pass by obstacles or through openings
  2. change in speed of a wave as the wave moves from one medium to another
  3. creation of a standing wave from two waves traveling in opposite directions in the same medium
  4. shift in the observed frequency and wavelength of a wave caused by the relative motion between the wave’s source and an observer

D. shift in the observed frequency and wavelength of a wave caused by the relative motion between the wave’s source and an observer

200

A light ray is incident on a plane mirror as shown in the diagram below.

Which ray best represents the reflected ray?

C

200

An amplified sound wave produced by an opera singer shatters a glass. Which phenomenon best explains this event?

  1. diffraction

  2. reflection

  3. refraction

  4. resonance

resonance

300

wo pulses traveling in the same uniform medium approach each other, as shown in the diagram below.

Which diagram best represents the superposition of the two pulses?


300

Point A on the standing wave is

  1. a node resulting from constructive interference
  2. a node resulting from destructive interference
  3. an antinode resulting from constructive interference
  4. an antinode resulting from destructive interference

B. a node resulting from destructive interference

300

 

Resonance occurs when one vibrating object transfers energy to a second object causing it to vibrate. The energy transfer is most efficient when, compared to the first object, the second object has the same natural

  1. frequency
  2. loudness
  3. amplitude
  4. speed


A. frequency

300

A person standing on a sidewalk hears the siren of an ambulance as it approaches, passes by, and goes away from the person. Compared to the frequency of the sound emitted by the siren, the frequency of the sound observed by the person during this event is

  1. higher, only

  2. lower, only

  3. first higher and then lower

  4. first lower and then higher

first higher and then lower

300

Which organisms could be illuminated by the laser's reflected light?

Bird

300

Glass may shatter when exposed to sound of a particular frequency. This phenomenon is an example of

  1. refraction
  2. diffraction
  3. resonance
  4. the Doppler effect

C. resonance

400

Two speakers, S1 and S2, operating in phase in the same medium produce the circular wave patterns shown in the diagram below.

At which two points is constructive interference occurring?

A and D

400

The diagram below represents a standing wave.



The number of nodes and antinodes shown in the diagram is ?

6 nodes and 5 antinodes

400

A wave passes through an opening in a barrier. The amount of diffraction experienced by the wave depends on the size of the opening and the wave’s


wavelength

400

The horn of a moving vehicle produces a sound of constant frequency. Two stationary observers, A and C, and the vehicle’s driver, B, positioned as represented in the diagram below, hear the sound of the horn.

Compared to the frequency of the sound of the horn heard by driver B, the frequency heard by observer A is

  1. lower and the frequency heard by observer C is lower
  2. lower and the frequency heard by observer C is higher
  3. higher and the frequency heard by observer C is lower
  4. higher and the frequency heard by observer C is higher

B. lower and the frequency heard by observer C is higher

400

The angle of reflection for the light ray is ? 

250

400

The effect produced when two or more sound waves pass through the same point simultaneously is called

  1. interference
  2. diffraction
  3. refraction
  4. resonance

A. interference

500

Two pulses approach each other in a uniform medium, as represented in the diagram below.

Which diagram best represents the superposition of the two pulses when the pulses overlap?

A. 

500

Two waves traveling in the same medium and having the same wavelength (λ) interfere to create a standing wave. What is the distance between two consecutive nodes on this standing wave?

1/2 λ

500

The diagram below shows wave fronts approaching an opening in a barrier. The size of the opening is approximately equal to one-half the wavelength of the waves. On the diagram below, draw the shape of at least three of the wave fronts after they have passed through this opening.


500

As a car approaches a pedestrian crossing the road, the driver blows the horn. Compared to the sound wave emitted by the horn, the sound wave detected by the pedestrian has a ............... frequency and a ................ pitch



higher frequency and a higher pitch

500

Determine the angle at which the ray is incident on mirror 2.

350

500

A girl on a swing may increase the amplitude of the swing’s oscillations if she moves her legs at the natural frequency of the swing. This is an example of

  1. the Doppler effect
  2. destructive interference
  3. wave transmission
  4. resonance

D. resonance

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