# Class 12 Physics Model Paper 2 MCQs Test

FBISE Federal Board Class 12 Physics Model Paper 2 MCQs Test. Do as much practice as you can so that you get good marks in the final exams.

### Class 12 Physics Model Paper 2 MCQs Test

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Class 12 Physics
Model Paper 2
Practice MCQs Test

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1. When the hot and cold junctions of a thermocouple are interchanged, the thermo-emf:

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2. A force of 500 N is applied to one end of a cylindrical steel rod of diameter 50 cm, the tensile stress is:

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3. The dimension of electric potential is same as that of:

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4. Two charges are placed at a certain distance apart in vacuum. If an insulating slab is placed between them, then force will:

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5. Potential inside a hollow charged spherical conductor:

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6. A radioactive nuclideΒ  86ππ228 decays by a series of emissions of 3 alpha particles and 1 beta particle, the nuclide finally formed is:

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7. A coil of 150 loops is pulled in 0.06s from poles of the magnet, which decreases the magnetic flux linked with the coil from 6Γ10-4 Wb to 2Γ10-4 Wb. The average emf induced in the coil is:

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8. Which phenomenon does NOT verify particle nature of light?

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9. For long-distance electrical power transmission, we use:

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10. The half-life of a certain radioactive nucleus is 1.6 x 103 years. Its decay constant is:

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11. The source of emf transfers its maximum power to the external circuit when (r = internal resistance and R= load resistance):

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12. The quantity that remains constant in a transformer is:

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13. The potential difference across the silicon PN junction is:

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14. A galvanometer is made sensitive by:

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15. The minimum number of diodes required for full wave rectification are:

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16. If the resistivity of a conductor is 2 x 10-6 β¦m, then its conductivity is:

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17. The radius of 10th orbit in hydrogen atom is: