In a resonance tube experiment, the effective length of the air column for the first resonance is 20cm when set into vibration by a tuning fork of frequency...

Assessment: JAMB UTME - Physics - 1990 Subject: Physics

Question 1 Report

In a resonance tube experiment, the effective length of the air column for the first resonance is 20cm when set into vibration by a tuning fork of frequency 480Hz. Neglecting and effect, the velocity of sound in air is
Answer Details
λ  = 4(L + C) ; where C = o

λ  = 4 x 20 = 80cm

V =  λ F

= 80 x 10-2 x 480 = 384ms-1

Read lesson note on Measurements And Units (JAMB)
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