Class 10 Science Acoustics Exam Questions & Answers Pdf - 1

Question: 1

Velocity of sound in a gaseous medium is 330 ms^-1. If the pressure is increased by 4 times without causing a change in the temperature, the velocity of sound in the gas is

Question: 2

A whistle giving a out a sound of frequency 450 Hz approaches a stationary observer at a speed 33 ms^-1 _____

Question: 3

A source of sound is travelling with a velocity 40 km/h towards an observer and emit’s a source of frequency 2000 Hz. If the velocity of source is 1220 km/h, then the apparent frequency held by the observer is ______

Question: 4

If the energy in a longitudinal wave travels from south to north, the particles of the medium would be vibrating in ______

Question: 5

Rapid back and forth motion of a particle about its mean position is called _____

Question: 6

A wave motion is a transfer of ______