1. A transverse wave consists of –
- only crests
- only trough
- both crests and troughs
- rarefactions and compressions
[su_spoiler title=”View Answer ” style=”fancy”]both crests and troughs[/su_spoiler]
2. Sound waves travel fastest in –
- Solid
- liquids
- Gases
- Vacuum
[su_spoiler title=”View Answer ” style=”fancy”]Solid[/su_spoiler]
3. With the propagation of longitudinal waves through a medium, the quantity transmitted is –
- Matter
- Energy
- Energy and Matter
- Energy, Matter, and Momentum.
[su_spoiler title=”View Answer ” style=”fancy”][/su_spoiler]
4. Doppler’s effect in sound is due to-
- Motion of source
- Motion of observer
- The relative motion of source and observer
- None of these
[su_spoiler title=”View Answer ” style=”fancy”][/su_spoiler]
5. Velocity of sound in a gas is independent of –
- Temperature
- Pressure of gas
- Humidity
- Nature of gas
[su_spoiler title=”View Answer ” style=”fancy”]Pressure of gas[/su_spoiler]
6. The velocity of sound in any gas depends upon –
- the wavelength of sound only
- density and elasticity of gas
- the intensity of sound waves
- only amplitude and frequency of sound
[su_spoiler title=”View Answer ” style=”fancy”]density and elasticity of gas[/su_spoiler]
7. If the length of a sonometer wire is increased, then its frequency -0
- Increases
- Decreases
- Remains the same
- None of these
[su_spoiler title=”View Answer ” style=”fancy”]Remains the same[/su_spoiler]
8. Velocity of sound in a gaseous medium –
- Increases with temperature
- Decreases with temperature
- Does not depend on the temperature
- None of these.
[su_spoiler title=”View Answer ” style=”fancy”]Increases with temperature[/su_spoiler]
9. In a wave motion the maximum displacement is called –
- amplitude
- wavelength
- frequency
- phase
[su_spoiler title=”View Answer ” style=”fancy”]amplitude[/su_spoiler]
10. On increasing temperature the velocity of sound in a gas-
- increases
- decreases
- remain unchanged
- None of these
[su_spoiler title=”View Answer ” style=”fancy”]increases[/su_spoiler]
11. On increasing pressure the velocity of sound in a gas –
- increases
- decreases
- remain unchanged
- None of these.
[su_spoiler title=”View Answer ” style=”fancy”]remain unchanged[/su_spoiler]
12. In the air the velocity of sound depends upon –
- the pressure of air
- density of air
- the temperature of the air
- independent of temperature and pressure
[su_spoiler title=”View Answer ” style=”fancy”]density of air[/su_spoiler]
13. Beats are the result of –
- diffraction
- destructive interference.
- constructive interference
- superposition of two waves of nearly equal frequencies
[su_spoiler title=”View Answer ” style=”fancy”]superposition of two waves of nearly equal frequencies[/su_spoiler]
14. The velocity of sound waves in a medium depends on –
- Frequency of the source
- Physical properties of the medium
- The amplitude of the source
- None of these
[su_spoiler title=”View Answer ” style=”fancy”]Frequency of the source[/su_spoiler]
