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Ayush Ku Pal from Delhi Public School, Nalconagar Angul
Subject :NSO    Class : Class 8

Gita is facing a wall with a microphone (O) between her and the wall. She begins to clap and microphone detects two sounds. The distance between her and the microphone is 200 m and the distance between her and the wall is 500 m. What is the time interval between both the sounds, if the speed of sound is 330 m/s?


A1.51 s
B0.909 s
C1.81 s
D0.303 s


In solution, sound 2 is given 700m , but it should be 800m , plz explain

Ans 1:

yashovardhan from ,
Class : Class 8
Distance travelled by Sound 2 is 800m... (500 m 300 m) so the answer is 1.81 s

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