A long tube contains air pressure of `1 atm` and a temperature of `59^(@) C`. The tube is open at one end and closed at the other by a movable piston . A tuning fork near the open end is vibrating with a frequency of `500 Hz`. Resonance is produced when the piston is at distances `16 cm , 49.2 cm and 82.4 cm` from open end. Molar mass of air is `28.8 g//mol`. The speed of sound in air at `59^(@) C` isA. `332 m//s`B. `342 m//s`C. `352 m//s`D. `362 m//s`

A long tube contains air pressure of `1 atm` and a temperature of `59^

1.	A long tube contains air pressure of `1 atm` and a temperature of `59^(@) C`. The tube is open at one end and closed at the other by a movable piston . A tuning fork near the open end is vibrating with a frequency of `500 Hz`. Resonance is produced when the piston is at distances `16 cm , 49.2 cm and 82.4 cm` from open end. Molar mass of air is `28.8 g//mol`. The speed of sound in air at `59^(@) C` isA. `332 m//s`B. `342 m//s`C. `352 m//s`D. `362 m//s`
Answer» Correct Answer - A Speed sound in air at `59^(@) C = 2n (l_(2) - l_(1))` `= 2 xx 500 (49.2 - 16) xx 10^(-2)` `= 332 m//s`

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