Volume or Loudness

Q. Which wave represents the loudest sound?

1. I
2. IV
3. II
4. III

Q. The waveforms of two sound waves A and B are shown below. Choose the correct statements.

1. A and B are equally loud.
2. B is louder than A.
3. A is shriller than B.
4. Both are equally shrill.

Q.

The unit of quantity on which loudness of sound depends is

1. metre/second

2. metre

3. second

4. Hertz

Q. Question 2
The loudness of sound depends on:

(a) Its amplitude
(b) Its frequency
(c) Its time period
(d) Its speed

Q.

Correct the incorrect statement-

As the sound wave propagates, the particles of the medium only vibrate about their mean position but do not leave their position.

1. True
2. False

Q.

Sound covers a distance of 2.4 km in 7 seconds. What is the speed of the sound?

Q.

The velocity of sound increases by 75% when it enters into a liquid from air
and there is a 25% increase in the wavelength when it enters into another
liquid from the first liquid. The velocity of sound in the second liquid is
_________ if the velocity of sound in 1st liquid is 1100 m s^-1.

1. 1, 275 m s^-1

2. 1, 375 m s^-1

3. 1, 375 cm s^-1

4. 1, 275 cm s^-1

Q. If the amplitude of the sound reaching person A is 5 units and that reaching person B is 10 units. Which of them seems to have louder sound?

1. Person A
2. Person B
3. Depends on the distance from the source
4. Both hear equally loud sound

Q.

When sound travels from air to water, the quantity that remains unchanged is,

1. speed

2. wavelength

3. intensity

4. frequency

Q. Explain the quantities that the terms Loudness and Pitch of sound depend on? Give units of those quantities.

Q.

What is the intensity of sound wave?

1. Amount of force per unit time

2. Amount of energy per unit area

3. Amount of energy per unit time

4. Amount of energy per unit area per unit time

Q.

The loudness of sound depends on:

1. Amplitude

2. Time Period

3. Frequency

4. Speed

Q.

The amplitude of the sound waves determines___

1. Pitch

2. Loudness

3. Wavelength

4. Frequency

Q. Question 7
The loudness of sound is determined by the

(a) Amplitude of vibration
(b) Ratio of amplitude and frequency of vibration
(c) Frequency of vibration
(d) Product of amplitude and frequency of vibration

Q. A guitar was struck loudly whereas flute was relatively softer when played. Which property of the wave would be different between the two instruments?

1. Wavelength
2. Amplitude
3. Frequency
4. None of the above

Q.

A loud sound can travel long distance because, it___ compared to a gentle sound.

1. is associated with more energy

2. has higher frequency

3. has more force

4. has more velocity

Q. Question 21
We have a stringed musical instrument. The string is plucked in the middle first with a force of greater magnitude and then with a force of smaller magnitude. In which case would the instrument produce a louder sound?

Q.

Use the following information to answer the next question.

Which wave represents the loudest sound?

1. II

2. III

3. IV

4. I

Q.

The amplitude of the sound waves determines ___.

1. Pitch

2. Frequency

3. Loudness

4. Wavelength

Q. Name the two characteristics of sound which differentiate two sounds from each other.

Q.

When you speak to your friend, which of the following parameters has a unique value in the sound produced?

1. frequency

2. velocity

3. amplitude

4. wave length