Wave Code: Frequency, Wavelength and Speed

Section A: Wave Characteristics

Question 1mcq

Frequency is the number of vibrations per:

A.Newton

B.Metre

C.Kilogram

D.Second

Question 2mcq

Time period is the time taken for:

A.One decibel

B.One kilometre

C.One echo only

D.One complete vibration

Question 3mcq

Wavelength is distance between two consecutive:

A.Seconds

B.Compressions or rarefactions

C.Echoes only

D.Instruments

Question 4mcq

Loudness is mainly related to:

A.Amplitude

B.Wavelength only

C.Time period only

D.Medium colour

Question 5mcq

Pitch of sound depends mainly on which property?

A.Frequency

B.Echo distance

C.Reflection only

D.Amplitude only

Question 6mcq

In a sound wave graph, what does a larger peak height represent?

A.Time period only

B.Wavelength only

C.Amplitude

D.Medium density

Section B: Sound Calculations

Question 7mcq

How are frequency and time period related?

A.Always equal

B.Reciprocals

C.Both measured in metre

D.Unrelated

Question 8mcq

If frequency is

50\,Hz

, time period is?

A.

0.02\,s

B.

2\,s

C.

0.5\,s

D.

50\,s

Question 9mcq

Which relation gives the speed of a wave?

A.

v=f/\lambda

B.

v=T\lambda

C.

v = f\lambda

D.

v=mgh

Question 10mcq

A sound wave has frequency

100\,Hz

and wavelength

3\,m

. Speed is?

A.

300\,m/s

B.

103\,m/s

C.

30\,m/s

D.

33.3\,m/s

Question 11mcq

If speed is

340\,m/s

and frequency is

170\,Hz

, wavelength is?

A.

170\,m

B.

0.5\,m

C.

2\,m

D.

510\,m

Question 12mcq

If wave crests are closer together, what happens to the wavelength?

A.Larger

B.Zero always

C.Unchanged always

D.Smaller