This quiz works best with JavaScript enabled. Home > Science > Physics > Physics Basics > Physics – Quiz 29 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 29 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. BLUE COLOR OF THE SKY IS DUE TO ..... A) SCATTERING OF LIGHT. B) REFLECTION OF LIGHT. C) REFRACTION OF LIGHT. D) DIFFRACTION OF LIGHT. Show Answer Correct Answer: A) SCATTERING OF LIGHT. 2. The unit or label for work is A) Netwons. B) Joules. C) Meters. D) Seconds. Show Answer Correct Answer: B) Joules. 3. A ray of light that strikes a plane mirror PQ at an angle of incidence of 30o, is reflected from the plane mirror and then strikes a second plane mirror QR placed at right angles to the first mirror. The angle of reflection at the second mirror is: A) 30o. B) 45o. C) 60o. D) 90o. Show Answer Correct Answer: C) 60o. 4. What physicist developed the idea of inertia? A) Galileo. B) Newton. C) Coach Waugh. D) None of above. Show Answer Correct Answer: B) Newton. 5. Definition of kinetic energy A) The amount of energy transferred when an object is moved over a distance by an external force in regards to the direction of the displacement. B) The rate of energy transferred per second. C) The amount of energy transferred in motion. D) The amount of energy an object has at rest / before motion. Show Answer Correct Answer: C) The amount of energy transferred in motion. 6. How much force is needed to accelerate a 5 kg marble at a rate of 2.5 m/s? A) 12.5. B) 10. C) 2. D) 12. Show Answer Correct Answer: A) 12.5. 7. If a lion drags his prey 10 meters to his den doing 500 joules of work, how much force did he use? A) 50 Newtons. B) 500 Joules. C) 50, 000 Newtons. D) 10 Newtons. Show Answer Correct Answer: A) 50 Newtons. 8. What is the base unit for measuring mass? A) Grams. B) Kilograms. C) Pounds. D) Jin. Show Answer Correct Answer: B) Kilograms. 9. The most stable objects have A) High centre of gravity and narrow base. B) High centre of gravity and wide base. C) Low centre of gravity and narrow base. D) Low centre of gravity and wide base. Show Answer Correct Answer: D) Low centre of gravity and wide base. 10. How much energy is required to change 5 kg of ice at 0 $^\circ$ C into water at the same temperature? (latent heat of fusion is 3.36 X $ 10^6$ J/kg ) A) 16.1 X $ 10^6$ J. B) 16.8 X $ 10^6$ J. C) 15.1 X $ 10^6$ cal. D) 16.8 X $ 10^6$ cal. Show Answer Correct Answer: B) 16.8 X $ 10^6$ J. 11. If v2-u2=2as, what is the final velocity of a car which has an inital velocity of 8m/s, and then accelerates at 2m/s2 for 20m? A) 10 m/s. B) 11 m/s. C) 12 m/s. D) 14 m/s. Show Answer Correct Answer: C) 12 m/s. 12. A BATTERY OF 6V IS CONNECTED IN SERIES WITH RESISTOR OF 0.1 ohm, 0.15 ohm, 0.2 ohm, 0.25 ohm AND 6 ohm .HOW MUCH CURRENT WOULD FLOW THROUGH THE 0.3 ohM RESISTOR? A) 0.895 A. B) 2.22 A. C) 1 A. D) NONE OF THESE. Show Answer Correct Answer: D) NONE OF THESE. 13. The base SI unit of mass is the ..... A) Microgram. B) Milligram. C) Gram. D) Kilogram. Show Answer Correct Answer: D) Kilogram. 14. Physics variable for 13 m A) F. B) W. C) H. D) V. Show Answer Correct Answer: C) H. 15. SI unit of measrument time A) Meter. B) Day. C) Hour. D) Second. Show Answer Correct Answer: D) Second. 16. Increasing speed A) Distance. B) Velocity. C) Acceleration. D) None of above. Show Answer Correct Answer: C) Acceleration. 17. What color can produce white if it is mixed with red? A) Blue. B) Green. C) Yellow. D) Cyan. Show Answer Correct Answer: D) Cyan. 18. Meters per second per second (m/s2) is the unit of which physics concept? A) Acceleration. B) Velocity. C) Time. D) Distance. Show Answer Correct Answer: A) Acceleration. 19. What type of friction acts on the tire of a car? A) Sliding friction. B) Static friction. C) Rolling friction. D) Fluid friction. Show Answer Correct Answer: C) Rolling friction. 20. When one end of a cold metal spoon is placed upright in a cup of hot coffee, the other end gets hotter. Which one of the following best describes what is happening? A) Warmer molecules will rise to the top. B) The hot molecules produce thermal radiation that is then absorbed by the colder molecules. C) Higher-energy molecules hit lower-energy molecules, increasing their speed and therefore their temperature. D) Lower-energy molecules hit higher-energy molecules and the friction increases their temperature. Show Answer Correct Answer: C) Higher-energy molecules hit lower-energy molecules, increasing their speed and therefore their temperature. ← PreviousNext →Related QuizzesPhysics QuizzesScience QuizzesPhysics Quiz 1Physics Quiz 2Physics Quiz 3Physics Quiz 4Physics Quiz 5Physics Quiz 6Physics Quiz 7Physics Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books