A tuning fork is used to produce resonance in glass tuve. The length of the air column in the tube can be adjusted by a variable piston. At room temperature of `27^@C` two succesive resonance are produced at 20 cm and 73 cm column length. If the frequency of the tuning fork is 320 Hz. the velocity of sound is air at `27^(@)C` isA. `300 m//s`B. `330m//s`C. `350m//s`D. `339 m//s`

A tuning fork is used to produce resonance in glass tuve. The length o

1.	A tuning fork is used to produce resonance in glass tuve. The length of the air column in the tube can be adjusted by a variable piston. At room temperature of `27^@C` two succesive resonance are produced at 20 cm and 73 cm column length. If the frequency of the tuning fork is 320 Hz. the velocity of sound is air at `27^(@)C` isA. `300 m//s`B. `330m//s`C. `350m//s`D. `339 m//s`
Answer» Correct Answer - D Velocity of sound `v=2f_0(l_2-l_1)` `=2xx320xx(0.73-0.20)` `=640xx0.53=339.2 m//s`.

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