Question 3
(a) A sound wave of frequency 500Hz and wavelength 0.66m is travelling in a
[2
medium. Calculate the velocity of the wave in the medium.
(b) Sound waves A & B are travelling in two different media. Find which wave will
be travelling faster, when:
(i) A is travelling in water and B is travelling in CO2.
(ii) A is travelling in CO2 and B is travelling in hydrogen
Also support your answers with reasons.
Physics Specimen Paper Class IX 2019 Onwards
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