SOUND

Asked by  | 19th Jul, 2009, 07:39: AM

Expert Answer:

No. of crests and troughs = 40

No. of waves formed = 40

Time = 0.4 s

Frequency = 40 / 0.4   =  100 s-1

Answered by  | 6th Aug, 2009, 01:00: PM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.