Advertisements
Advertisements
प्रश्न
State two conditions for an echo to take place
Advertisements
उत्तर
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
संबंधित प्रश्न
The ratio of amplitude of two waves is 3:4. What is the ratio of their loudness?
The ratio of the amplitude of two waves is 3:4. What is the ratio of their Frequencies?
Explain the mechanism of the formation of a longitudinal wave when the source vibrates in the air.
If the amplitude of a wave is doubled, what will be the effect on its loudness?
State three factors on which loundess of sound heard by a listener depends.
The frequencies of notes given by flute, guitar and trumpet are respectively 400 Hz, 200 Hz and 500 Hz. Which one of these has the highest pitch?
Which characteristics of sound will change if there is a change in its amplitude and its waveform.
Three musical instruments give out notes at the frequencies listed below. Flute: 400 Hz; Guitar: 200 Hz; Trumpet: 500 Hz. Which one of these has the highest pitch?
The frequency of the stretched string of a fixed length is f when it is plucked in the middle. Where should it be plucked so that string vibrates with frequency (i) 2f, (ii) 3f?
Draw diagrams to show these vibrations and name them.
Give scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
