Solve 2012 CBSE-Physics Question Paper (Set-2) given here.
1. When electrons drift in a metal from lower to higher Potential, does it mean that all the free electrons of the metal are moving in the same direction?
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2. The horizontal component of the earth’s magnetic field at a place is B and angle of dip is 60°. What is the value of vertical component of earth's magnetic field at equator?
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3. Show on a graph, the variation of resistivity wilh temperature for a typical scmiconductor.
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4. Why should electrostatic field be zero inside a conductor?
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5. Name the physical quantity which remains same for microwaves of wavelength 1 mm and UV radiations of 1600 A in vacuum.
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