Advertisements
Advertisements
प्रश्न
A musical instrument is producing a continuous note. This note cannot be heard by a person having a normal hearing rang. This note must then be passing through.
विकल्प
water
wax
vacuum
empty vessel
Advertisements
उत्तर
Sound waves cannot propagate through vacuum.
(c) Vacuum.
APPEARS IN
संबंधित प्रश्न
What is sound and how is it produced?
Fill in the blank.
Sound is produced when a body ______.
How does a musician playing on a flute change the pitch of sound produced by it ?
The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?
Give reason for the following :
In most of the cases, we cannot see the vibrations of a sound producing object with our eyes.
Match the following:
| Human larynx | Vibrations of metal arms |
| Loudspeaker | Vibrations in air column |
| Jal-Tarang | Vibrations in vocal cords |
| Tuning fork | Vibrations in strings |
| Sitar | Vibrations of screen |
Write the answer in your own words.
What is meant by vibration?
Describe an experiment to show that sound cannot travel through vaccum.
Infrasound can be heard by
Suppose a stick is struck against a frying pan in vacuum. Will the frying pan vibrate? Will we be able to hear the sound? Explain.
