Advertisements
Advertisements
प्रश्न
Fill in the blank.
The pitch of a sound depends on its ________.
Pitch of a sound depends on the _____ vibration.
Advertisements
उत्तर १
The pitch of a sound depends on its frequency.
उत्तर २
Pitch of a sound depends on the frequency of the vibration.
संबंधित प्रश्न
Write true or false for a given statement.
Larger is the amplitude, feeble is the sound.
Name the characteristic which differentiates two sounds of the same pitch and same loudness.
List four substances which are good absorbers of sound.
Explain the terms 'compressions' and 'rarefactions' of a wave. What type of waves consist of compressions and rarefactions.
Which of the following can produce longitudinal waves as well as transverse waves under different conditions?
Which of the following frequency of sound can be generated by a vibrating simple pendulum as well as by the vibrating vocal cords of a rhinoceros ?
Fig. shows three ways in which a string of length l in an instrument can vibrate.
 |
 |
 |
| (i) | (ii) | (iii) |
- Which of the diagram shows the principle note?
- Which vibration has the frequency four times that of the first?
- Which vibration is of the longest wavelength?
- What is the ratio of the frequency of the vibration in (i) and (ii)?
How does the frequency of sound given by a stretched string depend on its
- length,
- tension?
An observer A fires a gun and another observer B at a distance 1650 m away from A hears its sound. If the speed of sound is 330 m s-1, find the time when B will hear the sound after firing by A.
An observer sitting in line of two tanks watches the flashes of two tanks firing at each other at the same time, but he hears the sounds of two shots 2s and 3.5s after seeing the flashes. If distance between the two tanks is 510m, find the speed of sound.
For which range of frequencies, human ears are most sensitive?
What is sound? What causes it to produce?
How is sound perceived by us?
What kinds of waves are produced in solids, liquids, and gases?
Can we produce sound in vacuum?
Match the following.
| Ultrasonics | Frequency below 20Hz |
| Speed of sound in air | Needs material medium |
| Infrasonics | 330ms-1 |
| Sound propagation | Frequency more than 20000 Hz |
If the energy in a longitudinal wave travels from south to north, the particles of the medium would be vibrating in _____.
