Advertisements
Advertisements
Question
State two conditions for an echo to take place
Solution
The conditions for an echo to take place are
1)The minimum distance between the source of the sound and the reflector in the air must be 17 m
2) The size of the reflector must be large enough as compared to the wavelength of the sound wave.
APPEARS IN
RELATED QUESTIONS
The time period of a wave is 2 s. Its frequency is ..........
The pitch of a stringed instrument is increased by .................. tension in string.
The pitch of a flute is decreased by ................... length of air column.
Name three characteristics of a musical sound.
Two waves have frequencies 256 Hz and 512 Hz, but same amplitude. Compare their (i) loudness, and (ii) pitch
- Which of the following quality determines the loudness of a sound wave?
- wavelength
- frequency and
- amplitude
- How is loudness related to the quantity mentioned above in part (a)?
It is observed that during march-past we hear a base drum distinctly from a distance compared to the side drums.
(i) Name the characteristics of sound associated with the above obervation.
(ii) Give a reason for the above observation.
Explain the following and illustrate your answer by drawing appropriate diagram:
Loudness
Explain the following and illustrate your answer by drawing appropriate diagram:
Pitch
Name musical instrument, one in each case, which produces its notes by using the following. In each case state the method used to produce notes of different pitches and loudness.
(a) A vibrating string.
(b) A vibrating column air.
(c) Vibration of any other body.
