Punjab Physics 2022 Paper 2 — Solved Past Paper with Answers

Q1. The number of electrons in one coulomb charge is equal to:

• A. 6.2 x 1018 electrons✓
• B. Zero
• C. 1.6 x 10-22 electrons
• D. 6.2 x 1022 electrons

Explanation: Explanation will be added soon.

Q2. S.I unit of Electric flux is

• A. Nm/C
• B. N/m/C
• C. Nm3/C
• D. Nm2/C✓

Explanation: Explanation will be added soon

Q3. Gold band shows a tolerance of colour:

• A. +50%
• B. +10%
• C. +/-15%
• D. +/-5•/•✓

Explanation: Explanation will be added soon

Q4. The charge moving perpendicular to magnetic field experience force:

• A. Maximum
• B. Minimum
• C. Zero
• D. Infinite✓

Explanation: Explanation will be added soon

Q5. To convert a galvanometer into a voltmeter a high resistance is Connected:

• A. In series✓
• B. In parallel
• C. In perpendicular
• D. Along tangent

Explanation: Explanation will be added soon

Q6. The common door bell requires a voltage of about:

• A. 6 volts
• B. 7 volts
• C. 9 volts✓
• D. 10 volts

Explanation: Explanation will be added soon

Q7. The practical application of the phenomenon of mutual induction is:

• A. Electric Motor
• B. Transformer✓
• C. AC generator
• D. DC generator

Explanation: Explanation will be added soon

Q8. The device which flow of A.C allows is:

• A. Capacitor✓
• B. Inductor
• C. D.C Motor
• D. Battery

Explanation: Explanation will be added soon

Q9. The impedance of R — L series circuit is:

• A. Z= /R²+X²1✓
• B. Z= /R²+X²c
• C. Z= /R+Xc
• D. Z= /R+XL

Explanation: Explanation will be added soon

Q10. The crystalline structure of NaC is;

• A. Tetragonal
• B. Cuboidal
• C. Hexagonal✓
• D. Trigonal

Explanation: Explanation will be added soon

Q11. The size of base of transistor is of the order of

• A. 10-6 m✓
• B. 10-5 m
• C. 10 -4m
• D. 10-3m

Explanation: Explanation will be added soon

Q12. Two inputs NAND gate with inputs A and B has an output “0” if:

• A. A is 0
• B. B is 0
• C. Both A and B are 0
• D. Both A and B are 1✓

Explanation: Explanation will be added soon

Q13. Compton wavelength is:

• A. h/m°C2
• B. hc/m°
• C. h/m°C✓
• D. hc/m

Explanation: Explanation will be added soon

Q14. The energy required for pair production is:

• A. 0.51 MeV
• B. 1.02MeV✓
• C. 1.4Mev
• D. 2MeV

Explanation: Explanation will be added soon

Q15. Balmer series lies in region of electromagnette-spectrum:

• A. Visible Region✓
• B. Infra red region
• C. Violet Region
• D. Frainfrared region

Explanation: Explanation will be added soon

Q16. 1 rem is equal to

• A. 0.15 Sv
• B. 0.01Sv✓
• C. 2.04 Sv
• D. 3.09 Sv

Explanation: Explanation will be added soon

Q17. The moderator used in nuclear reactor is

• A. Aluminium
• B. Sodium
• C. Calcium
• D. Graphite✓

Explanation: Explanation will be added soon