1.

AT_RESONANCE_AIR_COLUMN_OF_LENGTH_20CM_RESONATES_WITH_A_TUNING_FORK_OF_FREQUENCY_450HZ._IGNORING_END_CORRECTION,_THE_VELOCITY_OF_SOUND_IN_AIR_IS?$

A. 720m/s
B. 820m/s
C. 920m/s
D. 360m/s
Answer» E.


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