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ISC Class 12 Physics Solved Question Paper 2012 | Previous Year Papers

Subject

Physics

Class

ICSE Class 12

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ISC Class 12 Physics Solved Question Paper 2012

Multiple Choice Questions

1. A body has a positive charge of 8 x 10^-19 C. It has:

an excess of 5 electrons
a deficiency of 5 electrons
an excess of 8 electrons
an excess of 8 electrons

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2. Figure 1 below shows five dc sources (cells). Their emfs are shown in the figure.

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3. Which one of the following graphs in represents variation of reactance ‘X_C’ of a capacitor with frequency ‘f ’ of an AC supply:

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4. White light is passed through sodium vapours contained in a thin walled glass flask and the transmitted light is examined with the help of a spectrometer. The spectrum so obtained is:

Absorption spectrum
Solar Spectrum
Band Spectrum
Band Spectrum

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5. Binding energy of a nucleus is of the order of:

Electron volt (eV)
Kilo-electron volt (KeV)
Mega electron volt (MeV)
Mega electron volt (MeV)

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Short Answer Type

6. A point charge of 5 x 10^-6 C experiences a force of 2 x 10^-3 N when kept in a uniform electric field of intensity E. Find E.

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7. Which conservation principle is involved in Kirchoffs first law of electric circuits?

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8. Write an expression of magnetic flux density ‘B’ at a point in end - on position or an axial position of a magnetic dipole, (Derivation not required.)

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