NCERT Solutions for Class 9 Science Chapter 12
Important NCERT Questions
Sound
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Exercises Questions
Page No-175
Questions No-20
A sonar device on a submarine sends out a signal and receives an echo 5 s later. Calculate the speed of sound in water if the distance of the object from the submarine is 3625 m.
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