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![[Post New]](/templates/default/images/icon_minipost_new.gif) 2 Apr 2008 10:17:05 IST
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jee 07 question
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2 Apr 2008 10:21:37 IST
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i think the answer should be
c)
see when B is along Bj then force on it is along positive k
when B is along -Bj then the force on it is along negative k , ie it has retadation
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2 Apr 2008 10:30:01 IST
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no bt ans given is (a)
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2 Apr 2008 10:44:49 IST
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u can get the solution to it here
http://www.careerlauncher.com/common/analyses/2007%20IITJEE_paper2.pdf
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2 Apr 2008 11:24:00 IST
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SIMPLE QUESTION AGAIN :D
seee
F = q (v X B)
now for a to 2a... force will be along +z axis ... so acceleration along +ve z axis..
and for 2a to 3a... force will be along - z axis.. so retardation..
and the correct option matching this is (A) :)
retardation means the velocity is becoming less.. and not negative immediately as it is like in (c)
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---------------------------------------------------------------
* Gaurav Ragtah ( aka Artemis Fowl )
* Agent 'G' [sniper] - SD-6 (Alliance of Twelve)
* Your friendly neighborhood spideyunlimited |
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2 Apr 2008 21:23:59 IST
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thnx dude
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