Speed of Sound in Different Media

Q.

If $V_m$ is the velocity of sound in moist air, and the velocity of sound in dry air, under identical conditions of pressure and temperature is $V_d$ then:

1. $V_m<V_d$

2. $V_m>V_d$

3. $V_m{V}_d=1$

4. $V_m=V_d$

Q.

The speed of sound on a hot summer day will be _____ than the speed of sound on a cold winter day.

1. More

2. Less

3. None of these

4. Same

Q.

Sound travels at the fastest speed in which of the following mediums?

1. Air

2. Water

3. Steel

4. Equal in all mediums

Q. Which of the following statements is true?

1. The speed of sound is the same in every medium.
2. Sound travels faster in liquids than in solids.
3. The speed of sound decreases with an increase in temperature of the medium.
4. The speed of sound increases with an increase in temperature of the medium.

Q. The speed of sound in a solid medium depends on :​

1. Temperature of the medium​
2. All of the above​
3. Density of the medium​
4. Elasticity of the medium​

Q.

Speed of sound in ________ is greater than in liquids.

Q. When is velocity of sound more;during winters or during summers?

Q. A person is standing $1km$ away from a source of sound. The velocity of sound in the medium is $340m{s}^{-1}$. Calculate the number of oscillations (approximately) that the sound wave makes before it reaches that person. The frequency of the sound is $500Hz$.

1. 1450
2. 340
3. 1470
4. 1417

Q. A sound is travelling in air at a speed of $343m{s}^{-1}$. The wavelength of the sound wave is $0.1cm$. Find the frequency of the sound wave.

1. $633000Hz$
2. $543000Hz$
3. $343000Hz$
4. $400000Hz$

Q. The wavelength of a sound in a medium is $50cm$. If wave velocity is $25m{s}^{-1}$, then what is the time period?

1. $0.03s$
2. $0.02s$
3. $0.04s$
4. $0.06s$

Q. The wavelength of a sound in a medium is $50cm$. If wave velocity is $25m{s}^{-1}$, then what is the time period?

1. $0.02s$
2. $0.04s$
3. $0.06s$
4. $0.03s$

Q. The wavelength of a sound wave is $40cm$ and the time period is $0.0005s$. How many seconds will it take to travel a distance of $4km$?

1. $5s$
2. $11s$
3. $7s$
4. $16s$

Q.

The speed of sound depends on

1. Elasticity

2. Temperature

3. Density

4. All of these

Q. When sound waves travel from a rarer medium to a denser medium, its speed:

1. decreases
2. remain constant
3. increases
4. may increase or decrease

Q.

Speed of sound in compressible medium depends on pressure in the medium (Consider gaseous medium).

1. True

2. False

Q. Wavelength ($\lambda$), frequency $\left(f\right)$ and velocity $\left(v\right)$ of a sound wave are related as:

1. $\frac{\lambda }{f}=v$
2. $\lambda \times v=f$
3. $f\times v=\frac{1}{\lambda }$
4. $\lambda =v\times \frac{1}{f}$

Q. Which of the following factors does not affect the speed of sound?

1. Temperature
2. Humidity
3. Direction of wind
4. Frequency

Q. Which of the following is true about the speed of sound?

1. It decreases with the density in medium.
2. It is the highest for objects in solid state.
3. It is independent of the medium of propagation.
4. It increases from solid to gaseous state.