A man claps his hands in front of a wall and he hears the echo after `1.6 s`. He walks `33 m` nearer the wall and hears the echo `1.4 s` after clapping. Find the velocity of sound in air.

A soldier fires a bullet towards a fort-wall and hears the first echo after 2s. He moves a distance of 85m towards the wall, fires a bullet and hears the echo after 1.5 s. The velocity of sound is

A persion clapped his hands in front of a wall and heard echo later 1s. If speed of sound m air is 330 m/s, find out the distance between the person and the wall.

A man standing in front of a wall produces a sound and hears an echo after 3 s. He walks .X. m away from the wall and produces the same sound. Now he hears an echo after 5.25 s. Calculate distance he walked away from the wall. (Speed of sound in air is 340 m/s)

A man fires a shot and hears an echo from a cliff after 2 s . He walks 85 m towards the cliff and the echo of a second shot is now heard after 1.4 s . What is the velocity of sound and how far was the man from the cliff when he first heard the echo ?

A man stands in front of a hillock and fires a gun. He hears an echo after 1.5 sec . The distance of the hillock from the man is (velocity of sound in air is 330 m/s )

A man standing in front of a vertical cliff fires a gun. He hears the echo after 3 s. On moving closer to the cliff by 82-5 m, he fires again and hears the echo after 2.5 s. Find : the distance of the cliff from the initial position of the man,

A man stands before a large wall a large will at a distance of 100.0 m and claps his hands at regular intervals in such way that echo of a clap marges with the next clap. If he claps 5 times during every 3 seconds, find the velocity of sound in air.

A man standing in front of a vertical cliff fires a gun. He hears the echo after 3 s. On moving closer to the cliff by 82.5 m, he fires again and hears the echo after 2.5 s. Find : the speed of sound.