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BidishaKashayap1333
@bidishakashayap1333
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Joined: Oct 11, 2021
Last seen: Jul 27, 2023
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Topics: 2174 / Replies: 0
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Topic
Explain the terms ‘compression’ and ‘rarefactions’ of a wave. What type of waves consists of compression and rarefaction? (b) A worker lives at a distance of 1.32 km from the factory. If the speed of sound in air be 330 m/s
4 years ago
Forum
Sound
Replies: 0
Views: 76
Topic
What are longitudinal waves and transverse waves? Explain with the help of labelled diagrams. (b) Give two examples each of longitudinal waves and transverse waves.
4 years ago
Forum
Sound
Replies: 0
Views: 172
Topic
Define the terms ‘frequency’, ‘wavelength’, and ‘velocity’ of a sound wave. What is the relation between them? (b) A body vibrating with a time period of 1/256 s produces a sound wave which travels in air with a velocity of 350 m/s.
4 years ago
Forum
Sound
Replies: 0
Views: 172
Topic
An electric bell is suspended by thin wires in a glass vessel and set ringing. Describe and explain what happens if the air is gradually pumped out of the glass vessel. (b) Why cannot a sound be heard on the moon? How do astronauts talk to one anoth...
4 years ago
Forum
Sound
Replies: 0
Views: 90
Topic
How is sound produced? Explain with the help of an example. (b) How does sound from a sound producing body travel through air to reach our ears?
4 years ago
Forum
Sound
Replies: 0
Views: 97
Topic
(a) What is sound? What type of waves are sound waves in air? (b) Describe an experiment to show that sound cannot pass through vacuum.
4 years ago
Forum
Sound
Replies: 0
Views: 228
Topic
What is the difference between a compression and a rarefaction in a sound wave? Illustrate your answer with a sketch.
4 years ago
Forum
Sound
Replies: 0
Views: 98
Topic
The frequency of the sound emitted by the loudspeaker is 1020Hz. Calculate the wavelength of the sound wave in air inn cm where its velocity is 340 m/s.
4 years ago
Forum
Sound
Replies: 0
Views: 82
Topic
Explain why a ringing bell suspended in a vacuum chamber cannot be heard outside.
4 years ago
Forum
Sound
Replies: 0
Views: 254
Topic
Define the ‘frequency’ and ‘time period’ of a wave. What is the relation between the two?
4 years ago
Forum
Sound
Replies: 0
Views: 199
Topic
A wave is moving in air with a velocity of 340 m/s. Calculate the wavelength if its frequency is 512 vibrations/sec.
4 years ago
Forum
Sound
Replies: 0
Views: 89
Topic
A sound signal of 128 vibrations per second has a wavelength of 2.7m. Calculate the speed with which the wave travels.
4 years ago
Forum
Sound
Replies: 0
Views: 246
Topic
When we open a gas tap for a few seconds, the sound of escaping gas is heard first but the smell of gas comes later. Why?
4 years ago
Forum
Sound
Replies: 0
Views: 92
Topic
Describe a simple experiment to show that the prongs of a sound producing tuning fork are vibrating.
4 years ago
Forum
Sound
Replies: 0
Views: 70
Topic
Give reason for the following: In most of the cases, we cannot see the vibrations of a sound producing objects with our eyes.
4 years ago
Forum
Sound
Replies: 0
Views: 69
Topic
Which object is vibrating when the following sounds are produced? (a) the sound of a sitar (b) the sound of a table
4 years ago
Forum
Sound
Replies: 0
Views: 68
Topic
If a ringing bicycle bell is held tightly by hand, it stops producing sound. Why?
4 years ago
Forum
Sound
Replies: 0
Views: 228
Topic
(a) Name four ways in which sound can be produced. (b) Calculate the speed of a sound wave whose frequency is 2 kHz and wavelength 65 cm.
4 years ago
Forum
Sound
Replies: 0
Views: 77
Topic
Which of the following terms apply to sound waves in air and which to water waves? Transverse, rarefaction, trough, crest, compression, longitudinal
4 years ago
Forum
Sound
Replies: 0
Views: 282
Topic
Explain why the flash of a gun shot reaches us before the sound of the gun shot.
4 years ago
Forum
Sound
Replies: 0
Views: 72
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