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CBSE - 12th Previous Year Question Papers
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Saperator
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3/8/2010 5:02:03 PM
Mohit

icon Physics 2010 CBSE Question Papers With Solutions
  Download attached file for question paper with solutions.

Download
 
3/8/2010 9:45:25 PM
Rohan

icon Re: Physics 2010 CBSE Question Papers With Solutions
  Explain the function of a repeater in a communication system.


Answer:
A repeater is used for extending the range of a communication system. It consists of a receiver and a transmitter. The receiver of a repeater collects the signal from the transmitter of another repeater and after amplifying, it retransmits the signal. Sometimes, it also changes the carrier frequency of the pick-up signal before transmitting it to the receiver.

 
3/8/2010 9:48:13 PM
Seema

icon Re: Physics 2010 CBSE Question Papers With Solutions
  (i) Write two characteristics of a material used for making permanent magnets.
(ii) Why is the core of an electromagnet made of ferromagnetic materials?


Answer

(i) The material used for making permanent magnets should have the following characteristics:

(a) High retentivity: It ensures that the magnet remains strong even after removal of the magnetising field.

(b) High coercivity: It ensures that the magnetism of the material does not get easily lost.Apart from these two criteria, the material should have high permeability.

(ii) The core of an electromagnet should have high permeability and low retentivity. The high permeability of the core of an electromagnet ensures that the electromagnet is strong. On the other hand, low retentivity of the core ensures that the magnetism of the core material gets lost as soon as the current is switched off. Ferromagnetic materials have both high permeability and low retentivity. Hence, ferromagnetic materials are the most suitable for making the core of an electromagnet

 
8/5/2010 7:18:09 AM
Sushama M S

icon Re: Physics 2010 CBSE Question Papers With Solutions
  I want all compartment question papers (2006 to 2010)in physics

 
8/26/2010 12:09:13 PM
Alpana

icon Re: Physics 2010 CBSE Question Papers With Solutions
  anurag tyagi classes is very good in terms of competetive prepration for the students.i admited my son there CAT ,when he was in B.COM FINAL ,and he cracked it with a good rank.after years ,he also secured a HIGHER POSITION IN A TOP MNC IN NOIDA in the great guiadance of MR. ANURAG TYAGI.HE IS A GREAT TEACHER.BUT I FEEL THAT THEY SHOULD INCREASE THE FREQUENCY OF TEST TAKING.

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2/26/2011 1:07:04 AM
Ramit

icon Re: Physics 2010 CBSE Question Papers With Solutions
  The answer to the photo diode question is wrong. The diagram is the one for the oscillator.

 
5/31/2011 11:22:52 AM
Eliza Ruhaan

icon Re: Physics 2010 CBSE Question Papers With Solutions
  plz supply with physics cbse question paper with solutions of 2011

 
11/8/2011 11:22:25 AM
Nivedya Venugopal

icon Re: Physics 2010 CBSE Question Papers With Solutions
  fuikop

 
11/14/2011 10:57:53 PM
Asifhasan

icon Re: Physics 2010 CBSE Question Papers With Solutions
  good

 
12/22/2011 10:06:09 PM
Eejer

icon Re: Physics 2010 CBSE Question Papers With Solutions
  For online jobs visit www.eurupa.tk

 
3/2/2012 6:07:59 PM
Ekta Goel

icon Re: Physics 2010 CBSE Question Papers With Solutions
  pls send me physics compartment papers yrgently if u have

 
3/2/2012 6:10:22 PM
Ekta Goel

icon Re: Physics 2010 CBSE Question Papers With Solutions
  pls send me physics compartment papers urgently if u have

 
3/4/2012 5:55:24 PM
Shreyan

icon Re: Physics 2010 CBSE Question Papers With Solutions
  Dude, your answer to the 27th question is wrong.

Charge remains same, voltage reduces k times
capacity increases K times and the energy reduces k times

 
8/12/2012 8:46:02 PM
Aruna

icon Re: Physics 2010 CBSE Question Papers With Solutions
  ..sir i want all the previous question papers of physics ...jst to crack cbse boards...........if u can help me den ...plz send some mcq ...for the preparation of aipmt

 
10/3/2012 11:54:07 AM
Piyush Bhimte

icon Re: Physics 2010 CBSE Question Papers With Solutions
  Sir i want physics and chemistry CBSE question papers of last two years with answers. also send me some imp MCQ's for practice

 
6/19/2013 10:05:35 PM
Parul

icon Re: Physics 2010 CBSE Question Papers With Solutions
  last 10 yrs 12th cbse physics compartment papers....plz telll me as soon as possible plzz..

 
 
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