The velocity of sound is greatest in

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• C-07-Q062The velocity of sound in a medium depends on
• C-07-Q063The intensity of sound is proportional to
• C-07-Q064Like other waves, sound waves can undergo
• C-07-Q065An echo of sound is produced by
• C-07-Q066The persistence of hearing in the human ear is approximately
• C-07-Q067Taking the velocity of sound as 330 m/s, the minimum distance from a reflecting surface for a distinct echo is
• C-07-Q068Bats can fly without colliding with obstacles in the dark because they use
• C-07-Q069Bats can produce sound of frequency about
• C-07-Q070In air, the velocity of sound is proportional to
• C-07-Q071The velocity of sound in air and the air pressure are