Physics Nios plus two PQ IV Welcome to your Physics Nios plus two PQ IV Total Questions: 50 Name Mobile No: 1. 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: 75 cm 25 cm 50 cm 15 cm None Hint 2. The resistance of a conductor depends on Length, height, gravity, and energy Mass, volume, pressure, and length Length, area, material, and temperature Temperature, density, time, and pressure None Hint 3. 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: 10⁴ J 10⁻⁴ J –10⁻⁴ J 10⁻⁵ J None Hint 4. Fill in the blanks: A forward biased p-n junction offers ___ resistance to the flow of electrons. Low Zero Medium High None Hint 5. Pitch and Frequency Pitch is perception; frequency is measurable Pitch is measured in Hz Pitch is how loud a sound is; frequency is pitch Both are the same None Hint 6. The law of conservation of energy is applicable to: every system of the universe mechanical systems only chemical systems only nuclear systems only None Hint 7. 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 K : 1 1 : K² 1 : K None Hint 8. 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 9. SI unit of electric charge is: Ohm Coulomb Volt Ampere None Hint 10. A 100 W bulb is connected to a 220 V supply. The current flowing through the bulb is: 10/11 A 5/11 A 11/10 A 11/5 A None Hint 11. Fill in the blanks: Efficiency of a heat engine does not depend on the nature of the __. Working substance Fuel Pressure Temperature None Hint 12. A 100 W bulb is connected to a 220 V supply. The current flowing through the bulb is: 10/11 A 5/11 A 11/10 A 11/5 A None Hint 13. 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 6.25 × 10¹⁸ 1.6 × 10¹⁹ 6 × 10¹⁴ None Hint 14. Give in brief the principle of working of Parachute. Air resistance Buoyant force Surface tension Centripetal force None Hint 15. 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 Green Violet Red None Hint 16. 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/4 E/3 E/2 E 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, False True, False True, True False, True None Hint 18. 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 -15 W 30 W None Hint 19. Complete the sentences: A system which exhibits thermal, mechanical and chemical equilibrium is said to be in ______equilibrium: universal thermodynamic surroundings exterior None Hint 20. Interference is a phenomenon exhibited by: waves only waves as well as particles neither waves nor particles particles only None Hint 21. Work done in displacing a charge q on an equipotential surface through a distance r will be: q / 4πε₀r 4πε₀rq q² / 4πε₀r² Zero None Hint 22. Applications of photocells include: Used in automatic street lights and burglar alarms Used in thermometers Used in refrigerators and ovens Used in transformers None Hint 23. The maximum number of electrons present in the outermost orbit of any atom is: 2 32 8 infinite None Hint 24. 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 22.3 cm 44.3 cm 33.3 cm None Hint 25. A body is to be kept in equilibrium by some forces. The minimum number of coplanar forces required for this purpose is: 3 2 5 4 None Hint 26. Which of the following correctly describes how electric and magnetic fields affect a moving charge? Both exert force in the direction of motion Electric field cannot change velocity Electric field affects parallel to field; magnetic field affects perpendicular Magnetic field works only on stationary charge None Hint 27. Which of the following laws is used to determine the magnetic field around a current-carrying conductor? Ohm’s Law Ampere’s Circuital Law Faraday’s Law Lenz’s Law None Hint 28. 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 10⁻² Nm⁻¹ 10⁻³ Nm⁻¹ None Hint 29. Minimum number of non-coplanar forces acting on a body to keep it in equilibrium will be: 3 5 4 2 None Hint 30. Loudness and Intensity Loudness is perception; intensity is measurable Loudness is measured in W/m² Loudness is measurable, intensity is not Both are physical quantities None Hint 31. Fill in the blanks: A photodiode is always connected in ___ biasing. Both Zero Reverse Forward None Hint 32. In which of the following situations work is done against gravity of earth? A person lifts a load to a certain height in an earth’s natural satellite. A person tries to lift a heavy load but fails to do so. A car moves on a horizontal level road. A monkey climbs up a tree. None Hint 33. Fill in the blanks: Fusion is also called a ___ reaction. Fission Combustion Nuclear fusion Oxidation None Hint 34. 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 : 4 2 : 1 4 : 1 1 : 1 None Hint 35. Are household devices connected in series or parallel? Why? Parallel, to reduce resistance only Series, because it’s cheaper Parallel, so each gets equal voltage and works independently Series, because voltage divides equally None Hint 36. 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 10⁻⁵ N/m 10⁻⁴ N/m 10⁻³ N/m None Hint 37. Which law states that current is directly proportional to voltage? Ohm’s Law Faraday’s Law Ampere’s Law Coulomb’s Law None Hint 38. 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/2 F 2F F/4 None Hint 39. Through wave motion: neither energy nor particles are transmitted only particles are transmitted only energy is transmitted energy and particles both are transmitted None Hint 40. Fill in the blanks: In nuclear reactions ___ is converted into energy. Work Charge Mass Force None Hint 41. The number of electrons that constitute –1 C of charge is: 6.25 × 10¹⁸ 6.4 × 10²⁷ 1.6 × 10¹⁹ 9.0 × 10¹⁸ None Hint 42. The phenomenon responsible for the formation of rainbow is: polarization interference dispersion diffraction None Hint 43. 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 33.3 cm 22.3 cm None Hint 44. 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 5000 N 50 N 500 N None Hint 45. What is the dimensional formula of pressure? [M⁰ L⁰ T⁰] [M L⁻¹ T⁻²] [M L² T⁻²] [M L T⁻²] None Hint 46. Minimum number of non-coplanar forces acting on a body to keep it in equilibrium will be: 4 5 3 2 None Hint 47. Complete the sentences: The region of space outside the boundary of a system constitutes its: surroundings thermodynamic exterior universal None Hint 48. Which of the following is the correct symbol for an n-p-n transistor? No arrow shown Emitter arrow inward, base in middle, collector up Arrow in base terminal Emitter arrow outward, base in middle, collector up None Hint 49. Apparent breach of the law of conservation of energy in beta-decay reactions led to the discovery of: Neutrino Neutron Electron Proton None Hint 50. 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 1:4 1:2 1:1 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
