Heat

Light

Energy

particle

wave speed

wavelength

amplitude

frequency

$v=\lambda T$

$v=\lambda T^2$

$v=\frac{\lambda}{T}$

$v=\frac{T}{\lambda}$

frequency

period

Phase difference

wavelength

the wavelength would be halved

the wavelength would be doubled

the wavelength would stay the same

frequency does not affect wavelength

the frequency is tripled

the frequency is a third of what it was

amplitude does not affect frequency

leftwards

rightwards

upwards

downwards

z: frequency

s: amplitude

z: period

s: half-amplitude

z: wavelength

s: half-amplitude

z: period

s: amplitude

Wave profile does not move.

Transmits energy

Wave particle does not move

Particle at nodes does not vibrate at all

two stationary waves superimpose to produce a progressive waves.

the total energy of the resultant waves is the sum of the energy carried by the individual waves.

the frequency of the resultant wave is the difference between the frequencies of the individual waves.

the displacement at a point of the resultant wave is the sum of the displacement of the individual waves acting at that point.

constructive interference occurs

destructive interference occurs

a standing wave is produced

a traveling wave is produced

beats

resonance

standing waves

interference

maximum, constructive interference

zero, destructive interference

maximum, destructive interference

zero, constructive interference

$\lambda$

$\frac{\lambda}{2}$

$\frac{\lambda}{4}$

$\frac{\lambda}{8}$

$y=A\sin\left(\omega t+kx\right)$

$y=A\sin\left(kx-\omega t\right)$

$y=A\cos kx\sin\omega t$

 $y=A\cos kx-A\sin\omega t$  

frequency of vibration

propagation of energy

direction of vibration

wavelength

node ; antinode

anti-node ; node

anti-amplitude; amplitude

zero ; amplitude

single waves

longitudinal waves

progressive waves

stationary waves

Points on the nodes have maximum amplitude

Distance between a nodes and the adjacent antinode is

Points on the antinodes have the highest frequency

Every point on the waves has the same amplitude

A

B

C

D

E

the length and the tension of the string

the amplitude of wave and the length of the string

the amplitude of wave and the tension of the string

the tension and the mass per unit length of the string

the pipe “fits” only an odd number of quarter wavelengths

the pipe “fits” only an even number of quarter wavelengths

the pipe cannot put an anti-node at the open end

the pipe cannot get enough air to vibrate in the pipe at these lengths

$L=\frac{\lambda}{2}$

$L=\lambda$

$L=\frac{5}{4}\lambda$

$L=\frac{3}{4}\lambda$

2

3

4

5

first harmonic

second harmonic

third harmonic

fourth harmonic

same phase

different period

equal amplitude

different speed of propagation

sound intensity is energy transported per unit time across a unit area.

Intensity is directly proportional to the square of the distance from the point source.

Intensity is a scalar quantity.

SI unit for intensity is W m^-2

The observed change in frequency of sound or light because of the relative motion of a wave source and the observer.

The observed change in amplitude of sound or light because of the relative motion of a wave source and the observer.

The observed change in wave speed of sound or light because of the relative motion of a wave source and the observer.

The observed change in equilibrium position of sound or light because of the relative motion of a wave source and the observer.

observer is in motion only

the source is in motion only

both observer or source in motion

both observer and source are stationary

An apparent increase in frequency

An apparent decrease in frequency

An apparent decrease in wavelength

An apparent change in speed of sound

Frequency higher than 600 Hz

Frequency lower than 600 Hz

Exactly 600 Hz

No sound, silence.

frequency increases ; wavelength remain unchange

frequency increases ; wavelength increases

frequency increases ; wavelength decreases

frequency decreases ; wavelength increases

Observer moves at 20 m/s towards sound source.

Sound source is motionless.

Observer moves at 20 m/s away from sound source.

Sound source is motionless.

Observer is motionless.

Sound source moves at 20 m/s away from the observer.

Both sound source and observer are motionless.

 $f_a=\left(\frac{v}{v+v_s}\right)f_{ }$ 

 $f_a=\left(\frac{v-v_o}{v+v_s}\right)f_{ }$ 

 $f_a=\left(\frac{v}{v-v_s}\right)f$ 

 $f_a=\left(\frac{v+v_o}{v}\right)$