Pitch

Q.

Name the three characteristics of a musical sound.

Q.

What determines the pitch of a sound?

Q.

The diagram below shows three different modes of vibration P, Q and R of the same string of a givens length.

(a) Which vibration will produce a louder sound and why?

(b) Which vibration will produce sound of maximum shrillness (of pitch) and why ?

(c) What is the ratio of wavelength of vibrations P and R ?

Q.

How is it possible to detect the filling of a bottle under a water tap by hearing the sound at a distance ?

Q.

The characteristic of sound which enables a person to differentiate between two sounds with equal loudness but having different frequencies is

1. Loudness

2. Intensity

3. Pitch

4. Quality or Timbre

Q.

Meaning of shrill

Q.

Which of the following instrument has the highest pitch?

1. Guitar - 200 Hz

2. Flute - 400 Hz

3. Trumpet - 500 Hz

4. Piano - 450 Hz

Q.

Two sounds A and B are of same amplitudes, same wave forms but of frequencies F and 2F respectively.

Then :

(a) B differ in quality from A

(b) B is grave, A is shrill

(c) B is shrill, A is grave

(d) B is louder than A.

Q.

Name the subjective property of sound related to its frequency.

Q. is the characteristic of the sound which differentiates a shrill sound from dull sound.

1. Wavelength
2. Loudness
3. Pitch

Q.

Name and define the characteristic which enables one to distinguish two sounds of same loudness, but of different frequencies, given by the same instrument.

Q.

The frequencies of notes given by flute, guitar and trumpet are respectively 400 Hz, 200 Hz and 500 Hz. Which one of these has the highest pitch?

Q.

How do bats locate their prey? Explain in detail

Q.

Which property of sound helps the brain to interpret the frequency of a sound wave?

1. Loudness

2. Pitch

3. Timbre

4. Tone

Q.

A guitar has Strings of different thickness

1. To produce sounds of different loudness with the thickest string producing the loudest sound

2. To produce sounds of different pitch with the thickest string producing the shrillest sound

3. To produce sounds of different loudness with the thickest string producing the softest sound

4. To produce sounds of different pitch with the thinnest string producing the shrillest sound

5. To produce sounds of different quality or timbre

Q.

Name the scientist, in whose honour, the SI unit of frequency has been named.

Q.

The subjective property of sound related to its frequency is

1. Loudness

2. Quality or Timbre

3. Intensity

4. Pitch

Q.

Why is Womans voice is different from mans voice?

Q. A microphone is connected to the Y-input of a C.R.O. Three different sounds are made in turn in front of the microphone. Their traces (a), (b) and (c) produced on the screen are shown in Figure. Which trace is due for the sound with the lowest pitch?

1. a
2. b
3. c
4. all the above

Q. State whether the given statement is True or False :

1. True
2. False

Q.

We have two ears because:
i) It helps our brain to sense that from which direction sound is coming.
ii) In the case of hearing loss in one ear, one can still hear from another.

1. Both statements are false.

2. Both statements are true.

3. Statement (i) is only true.

4. Statement (ii) is only true.

Q.

Name the factors on which pitch of the sound depends