This quiz works best with JavaScript enabled. Home > Science > Physics > Physics – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 4 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which is not true about vector magnitude? A) It cannot be greater than the sums of magnitude of its component vectors. B) It cannot be negative. C) It is scalar quantity. D) Trigonometry is necessary to compute it from component vectors. Show Answer Correct Answer: B) It cannot be negative. 2. What is the net force? 250 N 20 N< ..... $\rightarrow$ A) -230 N to the right. B) -270 N to the left. C) 25 N to the left. D) -230 N to the left. Show Answer Correct Answer: D) -230 N to the left. 3. Superconductors are substances which A) Conduct electricity at low temperature. B) Conduct electricity at high temperatures. C) Offer high resistance to the flow of current. D) Offer no resistance to the flow of electricity. Show Answer Correct Answer: D) Offer no resistance to the flow of electricity. 4. What does the rotational inertia describe? A) The average position of mass in an extended object. B) How the mass of an object is distributed. C) How a force can rotate an object. D) How a force can rotate an object. Show Answer Correct Answer: B) How the mass of an object is distributed. 5. Five kilometers is ..... m. A) 500m. B) 50m. C) 5000m. D) 5m. Show Answer Correct Answer: C) 5000m. 6. Electric Motor converts A) Electrical energy into light energy. B) Mechanical energy into Electrical energy. C) Electrical energy into mechanical energy. D) None of above. Show Answer Correct Answer: C) Electrical energy into mechanical energy. 7. Which is the most common capacitor which involves two separate conductor plates separated from one another by a dielectric? A) Parallel-plate capacitor. B) Non-polarized capacitor. C) Series-plate capacitor. D) Electrolytic capacitor. Show Answer Correct Answer: A) Parallel-plate capacitor. 8. What happens to the image produced by a pinhole camera when you move the back wall farther from the pinhole? It becomes ..... A) Larger and brighter. B) Larger and fainter. C) Smaller and fainter. D) Smaller and brighter. Show Answer Correct Answer: B) Larger and fainter. 9. Momentum is inertia in motion. It is the product of an object's mass and its ..... A) Interia. B) Velocity. C) Size. D) Force. Show Answer Correct Answer: B) Velocity. 10. If all or a significant part of a stall strip is missing on an airplane wing, a likely result will be. A) Asymmetrical lateral control at a near stall angles of attack. B) Decreased lift In the urea of installation at high angles. C) Asymmetrical lateral control at low angles of attack. D) None of above. Show Answer Correct Answer: A) Asymmetrical lateral control at a near stall angles of attack. 11. Extrapolation means A) To use the measured data to predict something outside of what was measured. B) To use the measured data to predict something between two data points. C) A term used when you have an extra pole. D) A random guess. Show Answer Correct Answer: A) To use the measured data to predict something outside of what was measured. 12. Which object has the greatest Kinetic Energy? A) 2 kg rock traveling at 1 m/s. B) 3 kg wagon traveling at 1 m/s. C) 1 kg cannon ball traveling at 1 m/s. D) 2.5 kg gallon of water sliding at 1 m/s. Show Answer Correct Answer: B) 3 kg wagon traveling at 1 m/s. 13. Radiocarbon dating technique is used to estimate the age of A) Soil. B) Rocks. C) Fossils. D) Monuments. Show Answer Correct Answer: C) Fossils. 14. The SI unit for magnetic field is A) N/col. B) Torr. C) Kg/m3. D) Tesla (T). Show Answer Correct Answer: D) Tesla (T). 15. It is the technique of converting between units A) Derived units. B) Metric system. C) Unit prefixes. D) Dimensional analysis. Show Answer Correct Answer: D) Dimensional analysis. 16. How fast are you going right now relative to the ground? A) 0 m/s sitting here taking this quiz. B) 1000 m/s for some reason. C) Depends on my frame of reference. D) Relative to what?. Show Answer Correct Answer: A) 0 m/s sitting here taking this quiz. 17. Lightning conductors are made up of ..... A) Iron. B) Steel. C) Copper. D) Aluminium. Show Answer Correct Answer: C) Copper. 18. The greater the change in temperature, the ..... the amount of heat transferred. A) Greater. B) Lesser. C) Fewer. D) Cannot be determined. Show Answer Correct Answer: A) Greater. 19. For large areas such as a town, the unit of area used is A) Sq. m. B) Sq. ft. C) Sq. km. D) Sq. yds. Show Answer Correct Answer: C) Sq. km. 20. The Element of an electric heater is made of..... A) Copper. B) Aluminum. C) Nichrome. D) None of these. Show Answer Correct Answer: C) Nichrome. ← PreviousNext →Related QuizzesScience QuizzesPhysics Quiz 1Physics Quiz 2Physics Quiz 3Physics Quiz 5Physics Quiz 6Physics Quiz 7Physics Quiz 8Physics Quiz 9Physics Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books