Pitch

Q. The lower the frequency of vibration, the higher is the pitch.

1. True
2. False

Q.

What are ultrasonic? Write any three uses of ultrasonics.

Q.

How does frequency affect sound?

Q.

Voice of which of the following is likely to have maximum frequency:

1. man

2. cow

3. bird

4. dog

Q.

What is meant by the term ‘quality’ of a musical sound?

Q.

Question 3 (e)
State whether the following statement is true or false.
The lower the frequency of vibration, the higher is the pitch.

Q.

Frequency of Ultrasonic wave is :-

1. Less than 20000 Hz

2. greater than 20000 Hz

3. less than 20 Hz

4. 1000 Hz

Q.

The quality of sound produced by all stringed instruments will be the same.

1. True
2. False

Q.

How does the brain interpret the frequency of a sound?

1. Pitch

2. Tone

3. Loudness

4. Timbre

Q.

Name the mechanical waves whose frequency is more than 20 kHz.

Q. Which of the following statements is true?

1. A note consists of only two frequencies.
2. A tone consists of a single frequency.
3. A tone consists of multiple frequencies.
4. A note consists of a single frequency.

Q.

The pitch of sound increase with a decrease in the frequency of vibration.

1. True
2. False

Q. Question 9
Pitch of sound is determined by its

(a) Frequency
(b) Amplitude
(c) Speed
(d) Loudness

Q. How does a man’s voice differ from a woman’s voice?

Q.

1. The higher the frequency of a sound, the higher is its pitch.


2. The higher the amplitude of a sound, the lower is its loudness.

Which of the following options is correct?

1. Statement 2 only is true
2. Neither statement 1 nor 2 is true
3. Statement 1 only is true
4. Both the statements are false

Q.

What helps us distinguish between the two notes of same pitch and loudness produced by two vibrating bodies?

1. Amplitude

2. Frequency

3. Quality

4. Time period

Q.

Define quality of sound wave.

Q. The sound produced by an object vibrating with a high frequency is called _____________ .

1. shrill or high-pitched sound
2. deep or low-pitched sound
3. heavy sound
4. musical sound

Q. Name the factor that determines pitch of the note.

Q. The pitch of sound increases if its frequency

1. increases
2. cant say
3. decreases
4. remains same

Q. Sounds produced by two different instruments have different frequencies but the same amplitude. Which of these attributes of sound vary?

1. Loudness
2. Pitch
3. Quality
4. None of these

Q. Define pitch of a sound :

Q.

Match the following:

Column 1	Column 2
Range between 20 $Hz$ and 20$kHz$.	Trumpet.
A wind instrument.	Notes
A mixture of sounds of several frequencies.	Audible sound
Produces sound when it is hit.	Tone
The sound of single frequency	Cymbal.

Q.

Explain the relationship between pitch and frequency.

Q. If the sound is of high pitch, then it's frequency will be:

1. high
2. zero
3. low
4. infinite

Q.

Define Monotone?

Q.

Two friends were playing on the identical guitars whose strings were adjusted to give notes of the same pitch. Will the quality of the two notes be the same? Give a reason for your answer.

Q.

In the following questions, a statement of assertion followed by the reason is given. Choose the correct answers out of the following choices:

Assertion: X-rays are generally used to clean parts located in hard-to-reach places.

Reason: Ultrasonics are low-frequency waves.

1. Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.

2. The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.

3. Assertion is true but the Reason is false.

4. The statement of the Assertion is false but the Reason is true.

5. Both the statements are false.