Physics Nios plus two PQ IV Welcome to your Physics Nios plus two PQ IV Total Questions: 50 Name Mobile No: 1. Fill in the blanks: In nuclear reactions ___ is converted into energy. Mass Force Charge Work None Hint 2. 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 10⁻⁴ J 10⁴ J 10⁻⁵ J None Hint 3. 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: 66.3 cm 44.3 cm 22.3 cm 33.3 cm None Hint 4. The maximum number of electrons present in the outermost orbit of any atom is: 32 8 infinite 2 None Hint 5. Pitch and Frequency Both are the same Pitch is perception; frequency is measurable Pitch is measured in Hz Pitch is how loud a sound is; frequency is pitch None Hint 6. Work done in displacing a charge q on an equipotential surface through a distance r will be: q² / 4πε₀r² q / 4πε₀r 4πε₀rq Zero None Hint 7. 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? 50 N 5000 N 500 N 50000 N None Hint 8. The law of conservation of energy is applicable to: chemical systems only every system of the universe nuclear systems only mechanical systems only None Hint 9. Loudness and Intensity Both are physical quantities Loudness is measured in W/m² Loudness is perception; intensity is measurable Loudness is measurable, intensity is not None Hint 10. The phenomenon responsible for the formation of rainbow is: interference diffraction polarization dispersion None Hint 11. Apparent breach of the law of conservation of energy in beta-decay reactions led to the discovery of: Proton Electron Neutrino Neutron None Hint 12. SI unit of electric charge is: Ohm Volt Ampere Coulomb None Hint 13. 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 30 W Zero 15 W None Hint 14. Minimum number of non-coplanar forces acting on a body to keep it in equilibrium will be: 3 5 4 2 None Hint 15. A body is to be kept in equilibrium by some forces. The minimum number of coplanar forces required for this purpose is: 2 5 3 4 None Hint 16. What is the dimensional formula of pressure? [M L⁻¹ T⁻²] [M L T⁻²] [M L² T⁻²] [M⁰ L⁰ T⁰] None Hint 17. 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. False, True False, False True, False True, True None Hint 18. Fill in the blanks: Fusion is also called a ___ reaction. Nuclear fusion Combustion Oxidation Fission None Hint 19. Fill in the blanks: A photodiode is always connected in ___ biasing. Both Forward Zero Reverse None Hint 20. 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 2 : 1 1 : 4 4 : 1 None Hint 21. Applications of photocells include: Used in thermometers Used in transformers Used in refrigerators and ovens Used in automatic street lights and burglar alarms None Hint 22. Complete the sentences: The region of space outside the boundary of a system constitutes its: universal thermodynamic surroundings exterior None Hint 23. 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 Both exert force in the direction of motion Electric field cannot change velocity Magnetic field works only on stationary charge None Hint 24. The number of electrons that constitute –1 C of charge is: 9.0 × 10¹⁸ 6.4 × 10²⁷ 6.25 × 10¹⁸ 1.6 × 10¹⁹ None Hint 25. A 100 W bulb is connected to a 220 V supply. The current flowing through the bulb is: 10/11 A 11/10 A 11/5 A 5/11 A None Hint 26. 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: K² : 1 1 : K² K : 1 1 : K None Hint 27. A 100 W bulb is connected to a 220 V supply. The current flowing through the bulb is: 11/5 A 5/11 A 11/10 A 10/11 A None Hint 28. 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 29. Minimum number of non-coplanar forces acting on a body to keep it in equilibrium will be: 3 2 5 4 None Hint 30. 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: 1.6 × 10¹⁹ 6 × 10¹⁴ 6.25 × 10¹⁸ 9 × 10⁹ None Hint 31. Interference is a phenomenon exhibited by: particles only waves as well as particles waves only neither waves nor particles None Hint 32. Fill in the blanks: A forward biased p-n junction offers ___ resistance to the flow of electrons. Medium Low Zero High None Hint 33. Fill in the blanks: Efficiency of a heat engine does not depend on the nature of the __. Working substance Temperature Fuel Pressure None Hint 34. 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? Blue Violet Red Green None Hint 35. Which law states that current is directly proportional to voltage? Ohm’s Law Coulomb’s Law Ampere’s Law Faraday’s Law None Hint 36. 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 37. 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/3 E/2 E/4 None Hint 38. 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: 1:3 1:1 1:2 1:4 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: 33.3 cm 44.3 cm 66.3 cm 22.3 cm None Hint 40. Which of the following is the correct symbol for an n-p-n transistor? Emitter arrow inward, base in middle, collector up Emitter arrow outward, base in middle, collector up Arrow in base terminal No arrow shown None Hint 41. 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: 2F F/2 F/4 F None Hint 42. Complete the sentences: A system which exhibits thermal, mechanical and chemical equilibrium is said to be in ______equilibrium: thermodynamic exterior surroundings universal None Hint 43. The resistance of a conductor depends on Length, area, material, and temperature Length, height, gravity, and energy Temperature, density, time, and pressure Mass, volume, pressure, and length None Hint 44. Through wave motion: only energy is transmitted only particles are transmitted neither energy nor particles are transmitted energy and particles both are transmitted None Hint 45. Give in brief the principle of working of Parachute. Buoyant force Surface tension Air resistance Centripetal force None Hint 46. 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 10⁻² Nm⁻¹ 10⁻⁴ Nm⁻¹ 10⁻³ Nm⁻¹ None Hint 47. 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 15 cm 25 cm 75 cm None Hint 48. 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 30 W -15 W 15 W None Hint 49. Which of the following laws is used to determine the magnetic field around a current-carrying conductor? Ohm’s Law Lenz’s Law Faraday’s Law Ampere’s Circuital Law None Hint 50. 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: 10⁻² N/m 10⁻³ N/m 10⁻⁴ N/m 10⁻⁵ N/m 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
