1.

a girl claps and hears the Echo after reflection which is 990m away.If the velocity of sound is 330m/sec.Calculate the time taken ​

Answer»

Answer:

6sec

Explanation:

DISTANCE =990m

speed=330m/s

speed=distance/time

so,time=distance/speed

time=990/330

time=3sec

as she HEARS the echo after REFLECTION the time will be 2 times

so 3×2=6sec



Discussion

No Comment Found

Related InterviewSolutions