Physics Nios plus two PQ IV Welcome to your Physics Nios plus two PQ IV Total Questions: 50 Name Mobile No: 1. The phenomenon responsible for the formation of rainbow is: polarization diffraction interference dispersion None Hint 2. Which of the following laws is used to determine the magnetic field around a current-carrying conductor? Ampere’s Circuital Law Lenz’s Law Faraday’s Law Ohm’s Law None Hint 3. Loudness and Intensity Loudness is perception; intensity is measurable Loudness is measurable, intensity is not Loudness is measured in W/m² Both are physical quantities None Hint 4. 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 5. 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 2F F/2 F None Hint 6. SI unit of electric charge is: Ampere Coulomb Ohm Volt None Hint 7. What is the dimensional formula of pressure? [M L T⁻²] [M L⁻¹ T⁻²] [M L² T⁻²] [M⁰ L⁰ T⁰] None Hint 8. Are household devices connected in series or parallel? Why? Parallel, to reduce resistance only Parallel, so each gets equal voltage and works independently Series, because it’s cheaper Series, because voltage divides equally None Hint 9. 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 15 cm 25 cm None Hint 10. Minimum number of non-coplanar forces acting on a body to keep it in equilibrium will be: 5 3 4 2 None Hint 11. The law of conservation of energy is applicable to: mechanical systems only every system of the universe chemical systems only nuclear systems only None Hint 12. The number of electrons that constitute –1 C of charge is: 1.6 × 10¹⁹ 9.0 × 10¹⁸ 6.25 × 10¹⁸ 6.4 × 10²⁷ None Hint 13. 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 33.3 cm 66.3 cm None Hint 14. A 100 W bulb is connected to a 220 V supply. The current flowing through the bulb is: 11/10 A 11/5 A 5/11 A 10/11 A None Hint 15. Which law states that current is directly proportional to voltage? Ampere’s Law Faraday’s Law Ohm’s Law Coulomb’s Law None Hint 16. Which of the following is the correct symbol for an n-p-n transistor? Arrow in base terminal Emitter arrow inward, base in middle, collector up No arrow shown Emitter arrow outward, base in middle, collector up None Hint 17. 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: K : 1 1 : K² K² : 1 1 : K None Hint 18. Fill in the blanks: A photodiode is always connected in ___ biasing. Zero Both Reverse Forward None Hint 19. Complete the sentences: The region of space outside the boundary of a system constitutes its: universal thermodynamic exterior surroundings None Hint 20. 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 person tries to lift a heavy load but fails to do so. A monkey climbs up a tree. None Hint 21. 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 Nm⁻¹ 10⁻² Nm⁻¹ 10⁻⁴ Nm⁻¹ 10⁻⁵ Nm⁻¹ None Hint 22. 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/3 E/2 E/4 E None Hint 23. Which of the following correctly describes how electric and magnetic fields affect a moving charge? Both exert force in the direction of motion Magnetic field works only on stationary charge Electric field affects parallel to field; magnetic field affects perpendicular Electric field cannot change velocity None Hint 24. Interference is a phenomenon exhibited by: neither waves nor particles waves as well as particles particles only waves only None Hint 25. Give in brief the principle of working of Parachute. Air resistance Buoyant force Centripetal force Surface tension None Hint 26. A body is to be kept in equilibrium by some forces. The minimum number of coplanar forces required for this purpose is: 5 3 2 4 None Hint 27. 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: 30 W 15 W -15 W Zero None Hint 28. Pitch and Frequency Pitch is how loud a sound is; frequency is pitch Pitch is perception; frequency is measurable Both are the same Pitch is measured in Hz None Hint 29. 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 10⁻⁵ J 10⁴ J None Hint 30. Fill in the blanks: In nuclear reactions ___ is converted into energy. Charge Force Work Mass None Hint 31. 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 32. 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 Green Red Blue None Hint 33. Through wave motion: energy and particles both are transmitted neither energy nor particles are transmitted only energy is transmitted only particles are transmitted 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 : 1 2 : 1 1 : 4 4 : 1 None Hint 35. Fill in the blanks: Fusion is also called a ___ reaction. Nuclear fusion Fission Combustion Oxidation None Hint 36. 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 37. 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 38. 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 39. Fill in the blanks: Efficiency of a heat engine does not depend on the nature of the __. Temperature Fuel Pressure Working substance None Hint 40. Fill in the blanks: A forward biased p-n junction offers ___ resistance to the flow of electrons. Zero High Low Medium None Hint 41. Complete the sentences: A system which exhibits thermal, mechanical and chemical equilibrium is said to be in ______equilibrium: universal exterior surroundings thermodynamic None Hint 42. 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: 6.25 × 10¹⁸ 9 × 10⁹ 1.6 × 10¹⁹ 6 × 10¹⁴ None Hint 43. Minimum number of non-coplanar forces acting on a body to keep it in equilibrium will be: 3 4 5 2 None Hint 44. 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: 30 W Zero 15 W -15 W None Hint 45. Applications of photocells include: Used in transformers Used in automatic street lights and burglar alarms Used in refrigerators and ovens Used in thermometers 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: 10⁻³ N/m 10⁻⁵ N/m 10⁻² N/m 10⁻⁴ N/m None Hint 47. 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? 5000 N 50000 N 500 N 50 N None Hint 48. Work done in displacing a charge q on an equipotential surface through a distance r will be: q / 4πε₀r 4πε₀rq Zero q² / 4πε₀r² None Hint 49. The maximum number of electrons present in the outermost orbit of any atom is: 2 8 32 infinite None Hint 50. Apparent breach of the law of conservation of energy in beta-decay reactions led to the discovery of: Neutrino Proton Neutron Electron 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
