Physics Nios plus two PQ IV Welcome to your Physics Nios plus two PQ IV Total Questions: 50 Name Mobile No: 1. Which of the following is the correct symbol for an n-p-n transistor? No arrow shown Emitter arrow outward, base in middle, collector up Arrow in base terminal Emitter arrow inward, base in middle, collector up None Hint 2. A 100 W bulb is connected to a 220 V supply. The current flowing through the bulb is: 5/11 A 10/11 A 11/5 A 11/10 A None Hint 3. A body of mass 2 kg moves with a constant velocity v = 5 m/s, under a constant force of 3 N. The power loss due to frictional force is: -15 W Zero 30 W 15 W None Hint 4. The electrostatic force between two point charges kept in air at a distance ‘d’ is F₁ and F₂ at the same distance in a medium of dielectric constant K. The ratio F₁ : F₂ is equal to: 1 : K K² : 1 1 : K² K : 1 None Hint 5. The phenomenon responsible for the formation of rainbow is: dispersion diffraction interference polarization None Hint 6. Work done in displacing a charge q on an equipotential surface through a distance r will be: q / 4πε₀r Zero 4πε₀rq q² / 4πε₀r² None Hint 7. Minimum number of non-coplanar forces acting on a body to keep it in equilibrium will be: 2 4 3 5 None Hint 8. In a metre bridge experiment when the resistance in left gap was 2.5 Ω and in right gap 5.0 Ω, the null point was obtained at a distance 'l' from the zero of scale. The value of l is: 44.3 cm 22.3 cm 66.3 cm 33.3 cm None Hint 9. Which law states that current is directly proportional to voltage? Faraday’s Law Ampere’s Law Ohm’s Law Coulomb’s Law None Hint 10. A narrow parallel beam of white light is incident on a concave lens. Which of the following colour light diverges away at the greatest angle from the nearest point? Violet Blue Green Red None Hint 11. SI unit of electric charge is: Coulomb Ampere Volt Ohm None Hint 12. The resistance of a conductor depends on Temperature, density, time, and pressure Length, height, gravity, and energy Length, area, material, and temperature Mass, volume, pressure, and length None Hint 13. A body is to be kept in equilibrium by some forces. The minimum number of coplanar forces required for this purpose is: 2 4 5 3 None Hint 14. Through wave motion: neither energy nor particles are transmitted energy and particles both are transmitted only energy is transmitted only particles are transmitted None Hint 15. The number of electrons that constitute –1 C of charge is: 6.25 × 10¹⁸ 6.4 × 10²⁷ 9.0 × 10¹⁸ 1.6 × 10¹⁹ None Hint 16. When a glass-rod is rubbed with a piece of silk it acquires a charge of +96 µC. The number of electrons transferred from the glass-rod to the silk piece is: 9 × 10⁹ 6 × 10¹⁴ 6.25 × 10¹⁸ 1.6 × 10¹⁹ None Hint 17. In which of the following situations work is done against gravity of earth? A car moves on a horizontal level road. A person lifts a load to a certain height in an earth’s natural satellite. A monkey climbs up a tree. A person tries to lift a heavy load but fails to do so. None Hint 18. Two charges q₁ and q₂ kept 'd' distance apart, repel each other with a force F. The force between charges 2q₁ and 2q₂ kept '2d' distance apart will be: F/4 F F/2 2F None Hint 19. A particle having charge –1 μC is placed at a point where the electric potential is 100 V. The electric potential energy of the particle is: –10⁻⁴ J 10⁻⁵ J 10⁻⁴ J 10⁴ J None Hint 20. Which of the following correctly describes how electric and magnetic fields affect a moving charge? Electric field affects parallel to field; magnetic field affects perpendicular Electric field cannot change velocity Both exert force in the direction of motion Magnetic field works only on stationary charge None Hint 21. Fill in the blanks: Fusion is also called a ___ reaction. Nuclear fusion Combustion Fission Oxidation None Hint 22. A resistance of 5 Ω is connected in the left gap and that of 15 Ω in the right gap of a meter bridge. The position of the null point on the bridge wire from its left end will be: 50 cm 75 cm 25 cm 15 cm None Hint 23. Complete the sentences: A system which exhibits thermal, mechanical and chemical equilibrium is said to be in ______equilibrium: surroundings thermodynamic universal exterior None Hint 24. Loudness and Intensity Both are physical quantities Loudness is measurable, intensity is not Loudness is perception; intensity is measurable Loudness is measured in W/m² None Hint 25. Complete the sentences: The region of space outside the boundary of a system constitutes its: surroundings universal thermodynamic exterior None Hint 26. Fill in the blanks: In nuclear reactions ___ is converted into energy. Force Charge Mass Work None Hint 27. Fill in the blanks: Efficiency of a heat engine does not depend on the nature of the __. Fuel Working substance Pressure Temperature None Hint 28. A body of mass 2 kg moves with a constant velocity v = 5 m/s, under a constant force of 3 N. The power loss due to frictional force is: Zero 15 W 30 W -15 W None Hint 29. A particle is projected at an angle of 60° to the horizontal with a certain kinetic energy E. Its kinetic energy at the highest point of its path will be: E E/2 E/3 E/4 None Hint 30. In a hydraulic lift, a 50 kg mass is on a small piston of 0.01 m². What is the weight lifted by a large piston of 10 m² area? 50000 N 50 N 500 N 5000 N None Hint 31. You are given equal number of nuclei of two radioactive elements A and B. The half-life of A is 20 minutes and that of B is 40 minutes. After 80 minutes the ratio of number of nuclei in A and B will be: 1:1 1:2 1:3 1:4 None Hint 32. Which of the following laws is used to determine the magnetic field around a current-carrying conductor? Faraday’s Law Ampere’s Circuital Law Lenz’s Law Ohm’s Law None Hint 33. What is the dimensional formula of pressure? [M L⁻¹ T⁻²] [M L T⁻²] [M⁰ L⁰ T⁰] [M L² T⁻²] None Hint 34. A straight power line laid along east-west direction carries a current of 10 A. The earth’s magnetic field at the place is 10⁻⁴ T. Force per metre experienced by the line wire will be: 10⁻⁵ Nm⁻¹ 10⁻⁴ Nm⁻¹ 10⁻³ Nm⁻¹ 10⁻² Nm⁻¹ None Hint 35. Fill in the blanks: A forward biased p-n junction offers ___ resistance to the flow of electrons. High Low Zero Medium None Hint 36. Fill in the blanks: A photodiode is always connected in ___ biasing. Zero Reverse Both Forward None Hint 37. Pitch and Frequency Pitch is how loud a sound is; frequency is pitch Pitch is measured in Hz Both are the same Pitch is perception; frequency is measurable None Hint 38. Which of the following statements about diodes is correct? (i)A NOT gate uses two p-n junctions.(ii) When a zener diode is not working on its optimum voltage condition the load draws less power than the power dissipated in the diode. True, True False, True False, False True, False None Hint 39. In a metre bridge experiment when the resistance in left gap was 2.5 Ω and in right gap 5.0 Ω, the null point was obtained at a distance 'l' from the zero of scale. The value of l is: 22.3 cm 33.3 cm 44.3 cm 66.3 cm None Hint 40. Apparent breach of the law of conservation of energy in beta-decay reactions led to the discovery of: Neutrino Electron Neutron Proton None Hint 41. A straight power line laid along east-west direction carries a current of 10 A. The earth’s magnetic field at the place is 10⁻⁴ T. Force per metre experienced by the line wire will be: 10⁻³ N/m 10⁻⁵ N/m 10⁻⁴ N/m 10⁻² N/m None Hint 42. You are given equal number of nuclei of two radioactive elements A and B. The half life of A is 20 minutes and that of B is 40 minutes. After 80 minutes the ratio of number of nuclei in A and B will be: 4 : 1 1 : 1 1 : 4 2 : 1 None Hint 43. Applications of photocells include: Used in transformers Used in thermometers Used in automatic street lights and burglar alarms Used in refrigerators and ovens None Hint 44. Minimum number of non-coplanar forces acting on a body to keep it in equilibrium will be: 5 3 4 2 None Hint 45. Are household devices connected in series or parallel? Why? Parallel, to reduce resistance only Series, because it’s cheaper Series, because voltage divides equally Parallel, so each gets equal voltage and works independently None Hint 46. A 100 W bulb is connected to a 220 V supply. The current flowing through the bulb is: 11/10 A 11/5 A 10/11 A 5/11 A None Hint 47. Give in brief the principle of working of Parachute. Centripetal force Buoyant force Air resistance Surface tension None Hint 48. Interference is a phenomenon exhibited by: neither waves nor particles waves as well as particles waves only particles only None Hint 49. The maximum number of electrons present in the outermost orbit of any atom is: 2 8 32 infinite None Hint 50. The law of conservation of energy is applicable to: nuclear systems only chemical systems only every system of the universe mechanical systems only None Hint Time's up Share: admin Previous post Physics Nios plus two II July 24, 2025 Next post History Nios Plus Two PQ VI July 30, 2025
