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CBSE Class 12 Physics Set- III Solved Question Paper 2012


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CBSE Physics Set- III Solved Question Paper 2012, given here.

Q.1Why is the potential inside a hollow spherical charged conductor constant and has the same value as on its surface?

Ans.1 There is no electric field inside a shell. Potential is the amount of work done in moving a test charge, and since the field is absent inside the shell, the potential is constant inside it.

To get the CBSE class 12th NCERT SOLUTIONS, Click Here

Q.2A magnetic needle free to rotate in a vertical plane orients itself vertically at a certain place on the Earth. What are the values of (i) horizontal component of Earth’s magnetic field and (ii) angle of dip at this place?

Ans.2 A magnetic needle orients itself vertically on poles. Hereboth (i) horizontal component of Earth’s magnetic field is zero. (ii) angle of dip is zero.

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By:vikas | On:09-FEB-2014 13:58:40

very good site

By:dhilruba | On:31-JAN-2014 10:58:45

this site is very useful for students preparing for board exam.

By:yusuf shaikh | On:02-DEC-2013 23:26:59

Very helpful to understand marking pattern of CBSE.

By:mariha murmu | On:19-FEB-2013 16:13:39

cbse solved paper

By:subhash chand sharma | On:09-JAN-2013 12:25:31

please send the test paper

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