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## Discussion topic: Contributed Answer/Explanation to Q. 6

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 Page 1 of 1 From: anirudhthegreat Reply 1 of 15 Reply Subject: Contributed Answer/Explanation to Q. 6 ``` Concave lens ```Posted at: Tue Jan 26 06:29:41 2010 (GMT) From: anirudhthegreat Reply 2 of 15 Reply Subject: Contributed Answer/Explanation to Q. 13 ``` The answer is in the explanation 1kWh=3.6 × 106 ```Posted at: Tue Jan 26 06:32:11 2010 (GMT) From: ratchet Reply 3 of 15 Reply Subject: Contributed Answer/Explanation to Q. 16 ``` Identification of earth pin. It can be identified by the long and fat structure of it ```Posted at: Sat Feb 6 17:27:16 2010 (GMT) From: ratchet Reply 4 of 15 Reply Subject: Contributed Answer/Explanation to Q. 21 ``` Sound energy to electrical energy ```Posted at: Sat Feb 6 17:43:32 2010 (GMT) From: ratchet Reply 5 of 15 Reply Subject: Contributed Answer/Explanation to Q. 22 ``` Electrical energy to heat energy ```Posted at: Sat Feb 6 17:44:02 2010 (GMT) From: ratchet Reply 6 of 15 Reply Subject: Contributed Answer/Explanation to Q. 23 ``` Heat energy to mechanical energy ```Posted at: Sat Feb 6 17:44:28 2010 (GMT) From: ratchet Reply 7 of 15 Reply Subject: Contributed Answer/Explanation to Q. 24 ``` The S.I unit of force is newton. The C.G.S unit of force is dyne. One newton is the force which when acting on a body of mass 1 kg produces an acceleration of 1 m/s2 in it. 1N=1kg*1m/s2      =1000g*100cm/s2       =100000 g cm/s2       =105 dyne ```Posted at: Sat Feb 6 17:53:48 2010 (GMT) From: ratchet Reply 8 of 15 Reply Subject: Contributed Answer/Explanation to Q. 40 ``` Resonance The phenomenon due to which the applied repeated periodic forced vibrations becomes equal to the natura frequency of the vibrating body. Then it produces a sound with larger amplitude. ```Posted at: Sun Feb 7 01:59:03 2010 (GMT) From: poulomi24 Reply 9 of 15 Reply Subject: Contributed Answer/Explanation to Q. 22 ``` Electrical energy to light and heat energy ```Posted at: Thu Mar 4 15:41:43 2010 (GMT) From: snehald27 Reply 10 of 15 Reply View replies (1) Subject: Contributed Answer/Explanation to Q. 26 ``` work is said to be done only when the force applied on a body makes the body move....i.e there is a displacement of the body S.I. unit of work is joule. 1 joule of work is sais to be done when a force of 1 newton displaces a body through 1 metre in its own direction ```Posted at: Sun Mar 21 07:19:58 2010 (GMT) From: snehald27 Reply 11 of 15 Reply Subject: Contributed Answer/Explanation to Q. 26 ``` work is said to be done only when the force applied on a body makes the body move....i.e there is a displacement of the body S.I. unit of work is joule. 1 joule of work is said to be done when a force of 1 newton displaces a body through 1 metre in its own direction ```Posted at: Sun Mar 21 07:21:39 2010 (GMT) From: abhishek100031 Reply 12 of 15 Reply Subject: Contributed Answer/Explanation to Q. 34 ``` answer: ```Posted at: Wed Apr 21 09:49:32 2010 (GMT) From: raunakagarwal Reply 13 of 15 Reply Subject: Contributed Answer/Explanation to Q. 43 ``` 5 ```Posted at: Fri Jul 16 04:49:31 2010 (GMT) From: okiee Reply 14 of 15 Reply Subject: Contributed Answer/Explanation to Q. 36 ``` I CANT SEE THE FIGUURE please~ can it get clear-er? ```Posted at: Thu Nov 4 08:55:30 2010 (GMT) From: hatilway Reply 15 of 15 Reply Subject: Contributed Answer/Explanation to Q. 22 ``` electric-heat+light electric-heat and light ```Posted at: Sat Jan 8 11:40:40 2011 (GMT) Page 1 of 1

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