Advertisements
Advertisements
प्रश्न
What is the condition necessary for an echo to be heard distinctly?
Advertisements
उत्तर
Echo is a reflected sound heard after the original sound strikes a rigid obstacle...
The conditions are-
1- The reflecting surface should have a larger reflecting surface than the wavelength of the sound
2- The minimum distance to hear the echo should be 17m in the air or as described by the formula `(Vt)/2`...
APPEARS IN
संबंधित प्रश्न
How is the frequency of a stretched string related it’s tension?
A wave passes from one medium to another medium. Mention one property of the wave out of speed, frequency or wavelength which does not change.
What is a stethoscope ? Name the principle on which a stethoscope works.
What is a soundboard ? Explain the working of a soundboard with the help of a labelled diagram.
Point out the waves from the given list, i.e., light, sound, radio waves, ultrasonic waves, and thermal radiation, the energy is propagated by mechanical waves.
What do you understand by the ‘Echolocation system of Dolphins’?
Draw a diagram representing a wave of amplitude 4 cm and wavelength 2 m. If the frequency of the wave is 150 Hz, calculate its velocity.
What is mean by the reflection of sound?
