Acoustics » Exercise – 1
1. For a propagation of acoustical waves the medium must be :
(a) plastic
(b) either elastic or plastic
(c) neither elastic nor plastic
(d) elastic
2. It is possible to distinguish between longitudinal and transverse waves by studying the property of :
(a) reflection
(b) diffraction
(c) polarisation
(d) holography
3. During rainy season, we see lightning first and hear thundering of clouds a little later because :
(a) Due to moisture
(b) Velocity of sound is greater than the velocity of light
(c) Velocity of light is greater than the velocity of sound
(d) None of these
4. Reverberation of sound in a hall results due to its continued :
(a) reflection of sound
(b) diffraction of sound
(c) absorption of sound
(d) interference of sound
5. The walls of a hall built for music concert should ……….. .
(a) reflect sound
(b) absorb sound
(c) amplify sound
(d) transmit sound
Related Posts
Waves » Exercise - 115. Velocity of sound in vaccum is given by : (a) 332 m/sec (b) 0 (c) Infinity (d) None of these- Waves » Exercise - 113. The velocity of sound wave in air is : (a) 330 m/sec (b) 331 m/sec (c) 332 m/sec (d) 333 m/sec
- Waves » Exercise - 17. Velocity of a sound wave is : (a) 332 m/sec (b) 3 x 108 m/sec (c) 3 x 10-8 m/sec (d) -332 m/sec
- Waves » Exercise - 18. The velocity of sound in air is independent on the change in : (a) Pressure (b) Density (c) Temperature (d) Humidity
- Waves » Exercise - 1 1. Sound waves are examples of : (a) Longitudinal wave (b) Transverse wave (c) both (a) and (b) (d) None of these