Sounds Waves And Motion - Study Mode
[#96] In . . . . . . . . speed of sound is the fastest.
Correct Answer
(C) steel
[#97] The propagation of sound waves in a gas involves
Correct Answer
(A) adiabatic compression and rarefaction
[#98] Sound intensity is measured-
Correct Answer
(C) Decibel
[#99] What is the minimum distance (in metres) required to hear an echo?
Correct Answer
(C) 17
[#100] What is the frequency of Infrasonic waves?
Correct Answer
(C) Less than 20Hz