12th Class Physics MCQs

• Important 12th class physics mcqs pdf for Intermediate students.
• Important Multiple Choice Questions (MCQs) of every chapter of 2nd year Physics.
• 1. Identity the practical application of electrostatics force:  (a) Inkjet printer  (b) Z-rays  (c) laser  (d) Z.C generator
• 2. The heart of a photo copy machine is a drum which is made of:  (a) Copper (b) Aluminium  (c) Nickel  (d) Cobalt
• 3. The drum in photo copier is coated with layer of:  (a) Aluminium  (b) Copper  (c) Selenium  (d) Silver
• Important 12th physics mcqs with answers pdf for Intermediate students.
• 4. Which one is photo conductor?  (a) Copper  (b) Selenium  (c) Mercury  (d) Aluminium
• 5. SI unit of electric flux is:  (a) NmC^-1  (b) Nm^-1 C^-1  (c) Nm^2 C^-1  (d) Nm^3 C^-2
• 6. A changing electric flux creates:  (a) Electric fields  (b) Gravitational  (c) Magnetic field  (d) Electric charge
• 7. Equation ϕ = E.A is applicable to surface:  (a) Spherical  (b) Cylindrical  (c) Conical  (d) Flat
• 8. For computation of electric flux, the surface area should be:  (a) Parallel  (b) Flat  (c) Curved  (d) Spherical
• Important 12th class physics important mcqs for Intermediate students.
• 9. The electric flux through closed surface depends upon:  (a) Charge  (b) Medium  (c) Geometry  (d) Charge and Medium
• 10. Total flux through a closed surface depends on:  (a) Shape of surface   (b) Charge enclosed only  (c) Medium only  (d) Charge and Medium
• 11. Gauss’s Law can only be applied to:  (a) A curved surface  (b) A flat surface  (c) A surface of any shape  (d) A closed surface
• 12. An ECG records the ...... between points on human skin generated by electric process in the heart:  (a) Heart beat  (b) pulse rate  (c) pressure  (d) voltage
• Important 12th class physics mcqs pdf for Intermediate students.
• 13. Special organ called ampullae of lorenzini that are very sensitive to electric field are found in:  (a) Bats  (b) Cats  (c) Dogs  (d) Sharks
• 14. If charged body is moved against the electric field, it will gain:  (a) Elastic Potential Energy  (b) Kinetic Energy  (c) Gravitational Energy  (d) Electrical Potential Energy 
• 15. The absolute electric potential at a point distant 20cm from a charge of 2uC is:  (a) 9 × 10^2 V  (b) 9 × 10^3 V  (c) 9 × 10^4 V  (d) 9 × 10^5 V
• Important 12th physics mcqs with answers pdf for Intermediate students.
• 16. A charge of 10-10C between two parallel plates 1 can apart experience a force of 10-5 N:  (a) 10 V  (b) 102 V  (c) 103 V  (d) 104 V
• 17. Electron volt is the unit of:  (a) Potential  (b) Potential difference  (c) Electric current  (d) Electric energy
• 18. One electron volt is equal to:  (a) 1.6 × 10^-19 joule  (b) 1.6 × 10^-19 Coulomb  (c) 1.6 × 10^12 N  (d) 1.6 × 10^18 joule
• 19. Charge on electron is:  (a) 1.6 × 10^-19 C  (b) 1.6 × 10^19 C  (c) 1.6 × 10^-17 C  (d) 1.6 × 10^17 C
• 20. If electric and magnetic forces on an electron balance each other, the electric intensity will be:
• (a) E = mg / q  (b) E = q / mg  (c) E = Fc / q  (d) E = 1 / (4πε_o )  q / r^2 
• 21. A capacitor is perfect insulator for:  (a) Alternating current  (b) Sparking current  (c) Eddy current  (d) Direct current
• 22. Coulomb/ volt is called:  (a) Farad  (b) Ampere  (c) Joule  (d) Henry
• 23. The net charge on a capacitor (each plate having magnitude of charge of charge q) is:  (a) Infinity  (b) 2q  (c) q / 2  (d) Zero 
• 24. Presence of dielectric between the plates of a capacitor is doubled then its capacitance become:  (a) Reduces the electric force  (b) Enhances electric force  (c) Does not affect electric force  (d) Double electric force