Physics
Trending Questions
Q.
How is sound produced when we speak?
Q.
When I close the door strongly, then why does window near vibrates?
Q.
A source of wave produces 40 crests and 40 troughs in 0.4 seconds.Find the frequency of the wave.
Q.
what is the measurable quantity . pitch or frequency.
Q.
what enables us to distinguish the roaring of a lion from the buzzing of a bee
Q. Match the sounds in column I with the correct group in column II.
| Column I | Column II |
| a. a child whispering to another in class | i. high pitch, loud sound |
| b. the whine of a mosquito near your ears | ii. high pitch, soft sound |
| c. the bells of fire engines rushing past | iii. low pitch, loud sound |
| d. the ticking of a clock | iv. low pitch, soft sound |
Q. An electronically driven loudspeaker is placed near the open end of a resonance column apparatus. The length of air column in the tube is 80 cm. The frequency of the loudspeaker can be varied between 20 Hz and 2 kHz. Find the frequencies at which the column will resonate. Speed of sound in air = 320 m s−1.
Q. The pitch of sound depends on the time period of vibration. Is it true or false?
Q. What is the unit in which loudness of sound is measured?
Q. The first overtone frequency of a closed organ pipe P1 is equal to the fundamental frequency of a open organ pipe P2. If the length of the pipe P1 is 30 cm, what will be the length of P2?
