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प्रश्न
A man standing unsymmetrical position between two mountains and fires a gun. He hears the first echo after 1.5 s and the second echo after 2.5 s. If the speed of sound in air is 340 m/s, then the distance between the mountains will be ______
विकल्प
400 m
520 m
640 m
680 m
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उत्तर
A man standing unsymmetrical position between two mountains and fires a gun. He hears the first echo after 1.5 s and the second echo after 2.5 s. If the speed of sound in the air is 340 m/s, then the distance between the mountains will be 680 m.
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