question_answer

        Aditi clapped her hands near a cliff and heard the echo after 4 s. What is the distance of the cliff from her, if the speed of sound is taken as 346 ?

Answer:

    Speed of sound   Time taken for hearing the echo t = 4 s Distance travelled by the sound = v x t = 346 x 4 = 1384 m    In 4 s, sound has to travel twice the distance between the cliff and Aditi. Therefore, the distance between the cliff and Aditi is