1) 888 Hz
A man stands on the top of a high building with a source of sound with frequency 1000 Hz.He accidently drops the device.Find the frequency of the sound heard by the man 4 seconds after he drops the device?(Speed of sound=320 m/s,g=10 m/s2)?
1)888 Hz
2)860 Hz
3)894.75 Hz
4)930 Hz
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4 Answers
Soumyabrata Mondal
·2013-03-03 22:13:33
na=(vv-vs)no
vs→velocity of the source = 40m/s
v →Speed of sound=320 m/s
no→1000 Hz
Gaurav Gardi vs=-40m/s
Upvote·0· Reply ·2013-03-03 22:29:49Soumyabrata Mondal sorry, typng mistake :(
Ketan Chandak
·2013-03-04 00:04:38
dude...did the same thing...got the same answer....but the answer given is not that...
Gaurav Gardi is it (3)
Ketan Chandak yes it is....do provide the solution...
Soumyabrata Mondal but for this ans Vs=37.64
Soumyabrata Mondal how Vs can be 37.64????