i. The temperature of the surrounding
ii. The direction of the wind
iii. The pitch of the sound.
A. i and ii only
B. ii and iii only
C. i and iii only
D. i, ii and iii
Correct Answer: Option A
A. i and ii only
![A girl standing some distance from the cliff claps her hands and hears the echo 0.8s later. calculate her distance from the cliff. [speed of sound in air = 320 ms‾¹]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "A girl standing some distance from the cliff claps her hands and hears the echo 0.8s later. calculate her distance from the cliff. [speed of sound in air = 320 ms‾¹]")
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