Frequency of sound

Q.

The time taken by the wave to complete one vibration is called:

1. Amplitude

2. Time period

3. Frequency

Q.

What is the relationship between mass and frequency?

Q. The number of oscillations of a particle in unit time is called of the wave.

1. frequency
2. amplitude
3. time period

Q. The frequency of a vibrating body is 5 Hz. Calculate its time period?

1. $0.1s$
2. $0.2s$
3. $0.4s$
4. $0.8s$

Q. The frequency of a source of sound is $120Hz$. How many times does it vibrate in a minute ?

1. 
   5200 times
2. 
   5800 times
3. 
   6000 times
4. 
   7200 times

Q. A honey bee is vibrating its wings at the rate of $5000$ times in $50s$. Calculate the frequency.

1. 
   $96Hz$
2. 
   $98Hz$
3. 
   $100Hz$
4. 
   $102Hz$

Q. The frequency of the sound produced by a vibrating pendulum is 150 Hz. How many times does it vibrate in a minute ?

1. 8500 times
2. 8900 times
3. 9000 times
4. 9200 times

Q.

Sound wave cannot propagate in

1. Air

2. Water

3. Vacuum

4. Metals

Q. The frequency of the sound produced by a vibrating pendulum is 150 Hz. How many times does it vibrate in a minute ?

1. 8500 times
2. 8900 times
3. 9000 times
4. 9200 times

Q. A simple pendulum makes 10 oscillations in 20 seconds. What is the time period and frequency of its oscillation?
[2 marks]
[Exemplar]
[Time period, Frequency]

Q.

Why wood absorbs sound?

Q.

Sound can not travel through ______________.

Q. The frequency of a source of sound is $120Hz$. How many times does it vibrate in a minute ?

1. 
   5200 times
2. 
   5800 times
3. 
   6000 times
4. 
   7200 times

Q. An object produces 30, 000 vibrations in a minute. What is the frequency of the sound produced?

1. $450Hz$
2. 
   $480Hz$
3. 
   $500Hz$
4. 
   ​​​​​$548Hz$

Q. Time taken for one oscillation is called the _________ .

1. frequency
2. amplitude
3. time period
4. loudness

Q. Shouldnt Light, Sound and Heat be considered as matter as they can either be seen, heard or felt?