A bat emits a sound wave at a speed of 1650.0ms-1 and receives the echoes 0.15s later. Calculate the distance of the bat from the reflector

Assessment: WAEC SSCE - Physics - 1990 (Objective) Subject: Physics

Question 1 Report

A bat emits a sound wave at a speed of 1650.0ms^-1 and receives the echoes 0.15s later. Calculate the distance of the bat from the reflector

8.75m

16.50m

87.75m

123.75m

330.00m

Answer Details

The distance of the bat from the reflector can be calculated using the speed of sound and the time taken for the echo to return. The speed of sound is given as 1650.0ms^-1. When the bat emits a sound wave, it travels to the reflector and back, covering a total distance equal to twice the distance from the bat to the reflector. The time taken for this round trip is 0.15s (as given in the question). Using the equation: Distance = Speed x Time We can calculate the distance of the bat from the reflector as: Distance = (Speed of sound x Time taken)/2 Distance = (1650.0ms^-1 x 0.15s)/2 Distance = 123.75m Therefore, the correct answer is (d) 123.75m.

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A bat emits a sound wave at a speed of 1650.0ms-1 and receives the echoes 0.15s later. Calculate the distance of the bat from the reflector

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