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Subjects
Science CBSE
Class 9
Sound
Textbook based HOTS II
10.
Multiple choice question X
Exercise condition:
2
m.
A man standing \(825\ metres\) away from a cliff (steep rock) fires a gun. After how long will he hear its echo? The speed of sound in air is \(330\ m/s\).
\(2.5\ s\)
\(5\ s\)
\(10\ s\)
\(1.25\ s\)
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