What is the cause of sensation of sound due to rolling of thunder?
Q. (a) What is the cause of sensation of sound due to rolling of thunder?
(b) Give the audible range of human ear.
(c) What are infrasonic and ultrasonic waves ?
Ans. (a) The rolling of thunder is due to the successive reflections of the sound from a number of reflecting surfaces, such as the clouds and the land.
(b) 20 Hz to 20,000 Hz.
(c) Frequencies less than 20 Hz are called infrasonics and those greater than 20 kHz are called ultrasonics.
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