JEE & NEETJEE Physics JEE Main Physics 100+ MCQ & Answer | Page-05 | JEE & NEET MCQ February 4, 2025 DSN MARATHI 41. Why is copper a preferred choice in making electrical wires? A. Copper is a good conductor of electricity B. Poor conductor of electricity C. insulator D. superconductor Answer Option : A 42. Conductors are materials that allow A. Allow the flow of heat B. Does not allow heat to flow C. Allows cold to flow D. Stops cold from passing through Answer Option : A 43. What is the motion of the rocket based on? A. Mass B. Linear Momentum C. Kinetic Energy D. Angular Momentum Answer Option : B 44. bullet of mass 5 gm is fired from a gun of mass 5 kg. What is the velocity of the muzzle if the recoil velocity is 500 m/s. A. 500m/s B. 5m/s C. 50m/s D. 0.5 m/s Answer Option : D 45. Rocket Engines lift rocket from the earth surface because the hot gas with high velocity A. Push against the air B. Push against the earth C. Heat up the air which lifts the rocket D. React against the rocket and push it up Answer Option : D 46. How is a jet plane able to fly in the air ? A. The thrust of the jet plane compensates the force of gravity B. The weight of the air is the weight of the plane C. The force of gravity doesn’t act on bodies moving with high speed D. The flow of the air around the wings cause an upward force which compensates for the force of gravity Answer Option : A 47. Which of the following is momentum closely related to ? A. Impulse B. Power C. Force D. Kinetic Energy Answer Option : A 48. What is the principle behind thermocouple A. Joule effect B. Thomson effect C. Seebeck effect D. Peltier effect Answer Option : C 49. What does the internal resistance of a cell mean? A. The resistance of the material used in the cell B. The vessel of the cell C. The electrodes of the cell D. The electrolyte used in the cell Answer Option : D 50. What is the ratio of power dissipated if two electric bulbs are connected in series and the ratio of their resistance is 1:2? A. 1:4 B. 1:2 C. 2:1 D. 1:1 Answer Option : B
41. Why is copper a preferred choice in making electrical wires? A. Copper is a good conductor of electricity B. Poor conductor of electricity C. insulator D. superconductor Answer Option : A
42. Conductors are materials that allow A. Allow the flow of heat B. Does not allow heat to flow C. Allows cold to flow D. Stops cold from passing through Answer Option : A
43. What is the motion of the rocket based on? A. Mass B. Linear Momentum C. Kinetic Energy D. Angular Momentum Answer Option : B
44. bullet of mass 5 gm is fired from a gun of mass 5 kg. What is the velocity of the muzzle if the recoil velocity is 500 m/s. A. 500m/s B. 5m/s C. 50m/s D. 0.5 m/s Answer Option : D
45. Rocket Engines lift rocket from the earth surface because the hot gas with high velocity A. Push against the air B. Push against the earth C. Heat up the air which lifts the rocket D. React against the rocket and push it up Answer Option : D
46. How is a jet plane able to fly in the air ? A. The thrust of the jet plane compensates the force of gravity B. The weight of the air is the weight of the plane C. The force of gravity doesn’t act on bodies moving with high speed D. The flow of the air around the wings cause an upward force which compensates for the force of gravity Answer Option : A
47. Which of the following is momentum closely related to ? A. Impulse B. Power C. Force D. Kinetic Energy Answer Option : A
48. What is the principle behind thermocouple A. Joule effect B. Thomson effect C. Seebeck effect D. Peltier effect Answer Option : C
49. What does the internal resistance of a cell mean? A. The resistance of the material used in the cell B. The vessel of the cell C. The electrodes of the cell D. The electrolyte used in the cell Answer Option : D
50. What is the ratio of power dissipated if two electric bulbs are connected in series and the ratio of their resistance is 1:2? A. 1:4 B. 1:2 C. 2:1 D. 1:1 Answer Option : B
