ICSE Class 9 Physics
Question 19 of 19
Propagation of Sound Waves — Question 15
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Question Complete the following sentences —
(a) Sound cannot travel through ............... ; it requires a ...............
(b) When sound travels in a medium, the particles of medium ............... but the disturbance...............
(c) A longitudinal wave is composed of compression and ...............
(d) A transverse wave is composed of crest and ...............
(e) Wave velocity = ............... x wavelength
(a) Sound cannot travel through vacuum ; it requires a medium.
(b) When sound travels in a medium, the particles of medium do not move but the disturbance moves ahead.
(c) A longitudinal wave is composed of compression and rarefaction.
(d) A transverse wave is composed of crest and trough.
(e) Wave velocity = frequency x wavelength