Effect of Temperature on Speed of Sound in Gases

Q.

How does temperature affect speed of sound?

Q.

Amplitude of sound wave is measured in ____________.

Q.

Does the speed of sound increase or decrease on a hotter day? Justify.

Q.

How does the speed of sound in air vary with temperature ?

Q. At what temperature will the speed of sound in air become double of its speed at $0^{\circ }C$ ?

1. ${719}^{0}C$
2. ${819}^{0}C$
3. ${619}^{0}C$
4. ${919}^{0}C$

Q. The velocity of sound in air increases by about ______ for $1^{\circ }C$ in temperature. Fill in the blank.

1. 0.61 m/s
2. 0.1 m/s
3. 10 m/s
4. 15.4 m/s

Q. The temperature at which the speed of sound in air becomes double of its value at 27${}^o$ C?

1. 327 ${}^o$ C
2. -123 ${}^o$ C
3. 927 ${}^o$ C
4. 54 ${}^o$ C

Q.

If we increase the temperature of air from 0^oC to 22^oC, then the speed of sound would

1. decrease

2. remain the same

3. Increases till 11ºC and then decreases.

4. increase

Q. Assertion :Sound would travel faster on a hot summer day than on cold winter day. Reason: Velocity of sound is directly proportional to the square root of its absolute temperature.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Assertion is incorrect but Reason is correct

Q. Sound Velocity is maximum in :

1. $H_2$
2. $He$
3. $O_2$
4. $N_2$

Q. The ratio of the speed sound in nitrogen gas to that in helium gas, at 300 K is

1. $\sqrt{2/7}$
2. $\sqrt{1/7}$
3. $\sqrt{3}/5$
4. $\sqrt{6}/5$

Q.

In which of the three media, air, water or iron, does sound travel fastest at a particular temperature?

Q.

The amount of reflection of sound depends on which factor? Does it depend on speed of sound and density of medium?

Q. The velocity of sound in air increase for every $1^{o}C$ rise in temperature approximately by:

Q. How is the speed of sound in air affected by the temperature of air?

1. increases with the increase in temperature.
2. no effect.
3. data insufficient
4. decreases with the increase in temperature.

Q. The temperature at which speed of sound in air becomes double its value at 0${}^o$C is

1. 819${}^o$C
2. 546${}^o$C
3. 273${}^o$C
4. 1092${}^o$C

Q. How does the speed of sound in air vary with temperature?

Q. With the rise of temperature, the velocity of sound :

1. Decreases
2. Remains the same
3. Increases
4. Is independent of temperature

Q. Speed of sound in dry still air _______ for each $1^{0}C$ rise in temperature.

1. decreases
2. increases
3. remains same
4. decreases sharply

Q. A tuning fork and air whose temperature is ${51}^{o}C$ produce $4$ beats in one second when sounded together. When the temperature of air column decreases. When the temperature remains ${16}^{o}C$ only one beats per second is produced. the frequency of the tuning is

1. $100Hz$
2. $75Hz$
3. $150Hz$
4. $50Hz$

Q. The temperature at which the speed of sound in air becomes double of its value at ${27}^{\circ }C$ is

1. ${54}^{\circ }C$
2. ${327}^{\circ }C$
3. ${927}^{\circ }C$
4. $-{123}^{\circ }C$

Q. Sound takes some time to travel from one place to another. It will be maximum

1. at night
2. during summer
3. during winter
4. it allways remains the same

Q. The velocity of sound at $0^{o}C$ is $332$m/s. At what temperature will it $664$m/s?

Q. Assertion :Speed of sound in gases is independent of pressure of gas. Reason: With increase in temperature of gas speed of sound will increase.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Assertion is incorrect but Reason is correct
   

Q. Does the speed of sound increase or decrease on a hotter day?

1. Yes
2. No
3. May be
4. None of these

Q. When temperature is increased by $1^{o}C$, velocity of sound in air increases by

1. $61m{s}^{-1}$
2. $0.61m{s}^{-1}$
3. $610m{s}^{-1}$
4. $6.1m{s}^{-1}$

Q. Evaluate the speed of sound at $45{}^{\circ }\text{C}$. (Take the speed of sound in dry still air at $0{}^{\circ }\text{C}$ to be $330\text{m/s}$.)

1. $330.45\text{m/s}$
2. $357.45\text{m/s}$
3. $345.25\text{m/s}$
4. $314.75\text{m/s}$

Q.

Give reason for “speed of sound is different in different medium ”

Q. At what temperature the speed of sound in nitrogen will be equal to the speed of sound in oxygen at ${55}^{\circ }C$

1. ${14}^{\circ }C$
2. ${70}^{\circ }C$
3. ${28}^{\circ }C$
4. ${42}^{\circ }C$

Q. When the temperature of air rises by $3K$ from $300K$, what is the percentage rise in the velocity of sound?

1. $0.5$%
2. $2$%
3. None of these
4. $1$%