A. 200
B. 2.0
C. 0.5
D. 0.02
E. 0.005
Correct Answer:
Option E – 0.005
Explanation
T = λ/v
T = 1.65/330 = 0.005
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![an observer hears an echo 1.26 seconds after blowing a whistle near a cliff. calculate the distance of the observer from the cliff. [speed of sound in air = 330ms-1]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "an observer hears an echo 1.26 seconds after blowing a whistle near a cliff. calculate the distance of the observer from the cliff. [speed of sound in air = 330ms-1]")
