$$4.0~\text{gm}$$ of gas occupies $$22.4~\text{litres}$$ at NTP. The specific heat capacity of the gas at a constant volume is  $$5.0~\text{JK}^{-1}\text{mol}^{-1}.$$ If the speed of sound in the gas at NTP is $$952~\text{ms}^{-1},$$ then the molar heat capacity at constant pressure will be:
($$R=8.31~\text{JK}^{-1}\text{mol}^{-1}$$

 1 $$8.0~\text{JK}^{-1}\text{mol}^{-1}$$ 2 $$7.5~\text{JK}^{-1}\text{mol}^{-1}$$ 3 $$7.0~\text{JK}^{-1}\text{mol}^{-1}$$ 4 $$8.5~\text{JK}^{-1}\text{mol}^{-1}$$
Subtopic: Â Speed of Sound |
From NCERT
NEET - 2015
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Sound waves travel at $$350$$ m/s through warm air and at $$3500$$ m/s through brass. The wavelength of a $$700$$ Hz acoustic wave as it enters brass from warm air:

 1 increase by a factor of $$20$$ 2 increase by a factor of $$10$$ 3 decrease by a factor of $$20$$ 4 decrease by a factor of $$10$$
Subtopic: Â Speed of Sound |
Â 77%
From NCERT
AIPMT - 2011
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The time of reverberation of a room $$A$$ is one second. What will be the time (in seconds) of reverberation of a room, having all the dimensions double those of room A?

1. 2

2. 4

3. $\frac{1}{2}$

4. 1

Subtopic: Â Speed of Sound |
AIPMT - 2006
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