Doppler effect

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Doppler effect

by karmayogi » Thu Dec 25, 2008 10:48 am
If two trains pass each other going opposite directions on parallel east-west tracks, which of the following observations provides another illustration of the effect described above?
A. If the eastbound train blows its horn as they pass, passengers on the westbound train will hear a sound that decreases in pitch.
B. If the eastbound train blows its horn as they pass, passengers on the westbound train will hear a sound that increases in pitch.
C. If the eastbound train blows its horn as they pass, passengers on the eastbound train will hear a sound that decreases in pitch.
D. If the eastbound train blows its horn as they pass, passengers on the eastbound train will hear a sound that increases in pitch.
E. If the eastbound train blows its horn as they pass, passengers on the eastbound train will hear a sound that is steady in pitch.
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by ronniecoleman » Thu Dec 25, 2008 10:58 am
what is the source ??
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by earth@work » Thu Dec 25, 2008 2:20 pm
IMO A, what is the answer?
A:sound pitch to westbound passengers will decrease if the train blows the horn when passing( assuming the passenger sitting at the point where horn is blown)
B: pitch will increase if the train was already blowing horn before crossing
C, D & E show no relation between eastbound and westbound

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by karmayogi » Thu Dec 25, 2008 7:03 pm
ronniecoleman wrote:what is the source ??
Manhattan
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by karmayogi » Thu Dec 25, 2008 8:27 pm
earth@work wrote:IMO A, what is the answer?
( assuming the passenger sitting at the point where horn is blown)
If I assume the other way round then what's wrong with B?
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by raunekk » Thu Dec 25, 2008 10:12 pm
b/w A and B...


quite confusing...

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by karmayogi » Fri Dec 26, 2008 12:18 am
raunekk wrote:b/w A and B...


quite confusing...
Seriously confusing.

Could someone from Manhattan please pitch in?
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by raunekk » Fri Dec 26, 2008 1:20 am
hey guys...

https://www.manhattangmat.com/forums/the ... t3422.html

i found it in mgmat forum....


have a look..

mgmat instructor himself says the question needs some modifications...


thanks.

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by karmayogi » Fri Dec 26, 2008 4:05 am
raunekk wrote:hey guys...

https://www.manhattangmat.com/forums/the ... t3422.html

i found it in mgmat forum....


have a look..

mgmat instructor himself says the question needs some modifications...


thanks.
Cooool! So the problem is with the wording; Chapter closed.
Each soul is potentially divine. The goal is to manifest this divine within.
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by nicolette » Fri May 13, 2016 2:34 am
I think option A is correct

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by ashley.com » Fri May 13, 2016 2:50 am
I hope answer is A