Electricity and magnetism - Magnetic Field Objectives (HCV)

30

Ashish Kothari ·2011-06-09 21:31:21

2nd one is done. Rest are still open.

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iitimcomin ·2011-06-09 22:40:34

hey! studying after all exams are over?? u must be in 11th then?

the first one......is it a helix with non uniform pitch i think...

since it is perpendicular to the magnetic field and has a finite velocity, it will tend to move in a circular path with its axis parallel to the mag. field.....

and the electric field will go on increasing its velocity along its direction causing a non uniform pitch....

[did not put much thought to it ...so may be wrong....]

the third one is to do with joules-bernoullis eq.....
the answers shud be 'b' and 'c'......its beyond the scope of 11th std i think...:D

anyway good luck with ur prep.

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Ashish Kothari ·2011-06-09 22:50:22

Thanks a lot bhaiya. The first one is correct.

But, I have no idea how to do the third one. Your answers are correct.
I'm in 12th. Can you tell me how you got to the answer to the third question?

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Asish Mahapatra ·2011-06-09 22:57:08

Ashish : dont worry about the third question now , beyond JEE syllabus and it involves relativity

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iitimcomin ·2011-06-09 23:00:20

but ashish........all ur exams shud be ovr by now rite??

and asish: hi!! how are you??

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aditya ravichandran ·2011-06-09 23:05:22

yes,it seems to be lorentz transformation...
jee sticks with galileon transformation ..

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Ashish Kothari ·2011-06-09 23:43:11

All my exams? Nope. There are still many left! :)

Whats lorentz transformation and galileon transformation?

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Ashish Kothari ·2011-06-09 23:44:08

@Asish bhaiya : Encountered that question in HCV that is why I posted here. Thanks a lot anyway! [1]

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aditya ravichandran ·2011-06-09 23:47:22

http://en.wikipedia.org/wiki/Lorentz_transformation
http://en.wikipedia.org/wiki/Galilean_transformation

galilean physics is what classical physics is ,i.e the thing which we are studying in 11th and 12th

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Ashish Kothari ·2011-06-10 00:07:12

Okay. Question 3 was way simpler than I thought. Its an application of Dimensional Analysis, giving (b) and (c) as wrong.

I was wondering why I was the first one here to come up with this doubt if this way out of JEE syllabus. Now I know why! [3]

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