Subject :NSO Class : Class 8
Two persons X and Y are standing at a
distance of 100 m from a high wall as shown in the given figure. When X gives a clap, the time interval between the two
(direct and reflected) sounds heard by Y is 0.2 s. If the speed of sound is 330 ms-1, then the distance d between X and Y is ________.
A160 m
B270 m
C290 m
D320 m
Ans 1:
Class : Class 8