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![[Post New]](/templates/default/images/icon_minipost_new.gif) 29 Jun 2007 19:42:39 IST
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Q.the hour hand and the minute hand of a clock coincide at every relative periodic timeis- a]11/12 b]12/11 c]11/16 d]12/24
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29 Jun 2007 19:55:39 IST
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c'mmon .....reply me please
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d
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29 Jun 2007 23:19:13 IST
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the answer given is b
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30 Jun 2007 07:17:50 IST
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please anyone there, help me to solve this problem....
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30 Jun 2007 12:03:12 IST
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speed of minute hand is 2*pi rad per hour
speed of hour hand is pi/6 rad per hour
Let they concide after t hrs
So t*(2pi-pi/6) = 2pi
or t = 12/11 hrs
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Krishna Gopal Singh
B.Tech Chemical Engg
IIT Delhi 2002
Currently doing PhD from IIT Delhi |
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