Class 12 Physics 2022 Local MCQs Test

ByMuhammad Shayan Saeed June 10, 2023June 11, 2023

FBISE Federal Board Class 12 Physics 2022 Local MCQs Test. Do as much practice as you can so that you get good marks in the final exams.

Class 12 Past Papers | Our YouTube Chanel

Class 12 Physics 2022 Local MCQs Test

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Class 12 Physics
Past Paper 2022 Local
Practice MCQs Test

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1. If the motor is overloaded than the magnitude of back e.m.f is:

Becomes zero

Increases

Remains constant

Decreases

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2. If an electron jumps from second orbit to first orbit in hydrogen atom, it emits photon of:

3.8 eV

10.20 eV

3.40 eV

13.6 eV

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3. The quantity of uranium is 400g, the amount of uranium left after three half-lives is:

50 g

100 g

25 g

12.5 g

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4. Energy consumed by a 60-watt bulb in 2 minutes is:

72000 J

7.2 kJ

720 J

120 J

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5. Work done in moving a charge of 6C between two points is 10J. What is the potential difference between two points?

1.66 V

0.6V

60 V

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6. Pair production occurs only when energy of photon is at least equal to:

1.02 KeV

1.02 MeV

1.02 eV

1.02 GeV

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7. Photon A has twice the energy of photon B. What is the ratio of the momentum of A to that of B?

2:1

1:2

4:1

1:1

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8. Which of the following series of hydrogen spectra lies in the ultraviolet region of the spectrum?

Balmer series

Pfund series

Lyman series

Paschen series

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9. The phase difference between the current and voltage at resonance in R.L.C series A.C circuit is:

π/2

-π/2

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10. Four charges +Q. -Q, +Q. -Q are placed at the comers of a square taken in order. At the centre of the square:

E≠0, V=0

E=0, V≠0

E=0, V=0

E≠0, V≠0

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11. A body which break down just after crossing the elastic limit, is known as:

Brittle

Elastic

Hard

Ductile

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12. The particles that experience strong nuclear force are:

Hadrons

Bosons

Leptons

Photons

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13. The current in a coil of inductance 5H decreases at the rate of 2A/s. The induced e.m.f is:

10V

-10 V

2.5V

0.4V

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14. Which factor does not affect the conductivity of a PN junction diode?

Pressure

Doping

Voltage

Temperature

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15. A wire of resistance “R” is stretched till its radius is half of the original value. The resistance of stretched wire is:

16R

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16. The unit of magnetic flux is:

Tesla

Wb.m^-2

Wb.m²

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17. The working principle of galvanometer is based upon:

Impulse

Torque

Momentum

Force

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One Comment

atif says:
August 27, 2023 at 5:18 pm
mera lia duwa karan mera subha test ha numl university ma dua karan ho gian
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Class 12 Physics 2022 Local MCQs Test

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