A tuning fork with a frequency of $$800$$ Hz produces resonance in a resonance column tube with the upper end open and the lower end closed by the water surface. Successive resonances are observed at lengths of $$9.75$$ cm, $$31.25$$ cm, and $$52.75$$ cm. The speed of the sound in the air is:

 1 $$500$$ m/s 2 $$156$$ m/s 3 $$344$$ m/s 4 $$172$$ m/s
Subtopic: Â Speed of Sound |
Â 74%
From NCERT
NEET - 2019
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A tuning fork is used to produce resonance in a glass tube. The length of the air column in this tube can be adjusted by a variable piston. At room temperature of $$27^{\circ}\mathrm{C}$$, to successive resonances are produced at $$20$$ cm and $$73$$ cm column length. If the frequency of the tuning fork is $$320$$ Hz, the velocity of sound in air at $$27^{\circ}\mathrm{C}$$ is:

 1 $$330$$ m/s 2 $$339$$ m/s 3 $$350$$ m/s 4 $$300$$ m/s
Subtopic: Â Speed of Sound |
Â 72%
From NCERT
NEET - 2018
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$$4.0~\text{gm}$$ 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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