Abat flying in a cave emits a sound and receives its echo 0.1 s later. how far away is the cave wall? assume the speed of sound to be 340 m/s. answer in units of m.

Explanation:

It is given that,

A bat flying in a cave emits a sound and receives its echo 0.1 s later, t = 0.1 s

The speed of sound, v = 340 m/s

We need to find the distance between the bat and the cave wall. Distance travelled is given by :

d = 17 meters

It is the total distance between the bat and the cave wall is 17 meters. Hence, this is the required solution.

explanation:

v=uf/(u-f)

= 5.-10/(5+10) convex lens has negative focal length

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