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19/09/2020 3:28 pm
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In a resonance tube experiment when the tube is filled with water up to a height of 17.0 cm from bottom, it resonates with a given tuning fork. When the water level is raised the next resonance with the same tuning fork occurs at a height of 24.5 cm. If the velocity of sound in air is 330 m/s, the running fork frequency is :
(1) 2200 Hz
(2) 1100 Hz
(3) 3300 Hz
(4) 550 Hz
1 Answer
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19/09/2020 3:30 pm
(1) 2200 Hz
Explanation:
λ/2 = 24.5 - 17 = 7.5 cm
f = V/λ
= 330 x 100/15
= 2200 Hz