This quiz works best with JavaScript enabled. Home > Science > Physics > Physics Basics > Physics – Quiz 13 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 13 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A 60W bulb uses 60J every second and is 5% efficient. How mush energy is WASTED? A) 60J. B) 5J. C) 57J. D) 3J. Show Answer Correct Answer: C) 57J. 2. THE CHANGE OF FOCAL LENGTH OF AN EYE LENSTO FOCUS THE IMAGE OF OBJECTS AT VARYING DISTANCE IS DONE BY THE ACTION OF ..... A) PUPIL. B) RETINA. C) CILIARY MUSCLE. D) BLIND SPOT. Show Answer Correct Answer: C) CILIARY MUSCLE. 3. Part of an atom which carry positive electric charges A) Neutrons. B) Electrons. C) Protons. D) None of above. Show Answer Correct Answer: C) Protons. 4. Formula for power A) P = W/t. B) P = E/t. C) P = W*t. D) P = E*t. Show Answer Correct Answer: A) P = W/t. 5. How far will an object move in 12 seconds if it is traveling at a velocity of 8 m/s? A) 96 m. B) 0.7 m. C) 20 m. D) 4 m. Show Answer Correct Answer: A) 96 m. 6. Branch of Physics that is concerned with the study of highly ionized gases-that is gases, that have been separated into positively and negatively charged particle. A) Mechanics. B) Acoustics. C) Plasma Physics. D) Atomic and Nuclear Physics. Show Answer Correct Answer: C) Plasma Physics. 7. Which of the following is something that a physicist would study? A) Gravity. B) Force. C) Friction. D) All of the above. Show Answer Correct Answer: D) All of the above. 8. Divide 100.00g / 2.00mL A) 50g/mL. B) 5.0 x 101 g/mL. C) 50.0g/mL. D) 50.00g/mL. Show Answer Correct Answer: C) 50.0g/mL. 9. Which of the following is NOT a weak nuclear force? A) Generation of sunlight. B) Generation of magnetic fields. C) Dating of organic materials. D) Energy from plate tectonics. Show Answer Correct Answer: B) Generation of magnetic fields. 10. A hammer striking a nail drives it into a surface. What effect does the nail have on the hammer? A) It has no effect. B) It pushes back against the hammer. C) Its increases the acceleration of the hammer. D) It has no effect on the hammer, but moves the nail. Show Answer Correct Answer: B) It pushes back against the hammer. 11. Energy required to cause a phase change A) Temperature. B) Latent heat. C) Specific heat. D) None of above. Show Answer Correct Answer: B) Latent heat. 12. SI unit for power A) Watts. B) Joules. C) Newtons. D) Meters. Show Answer Correct Answer: A) Watts. 13. Translational, Rotational, and Vibrational A) 3 phase changes. B) Differences in latent heat. C) 3 types of internal energy. D) None of above. Show Answer Correct Answer: C) 3 types of internal energy. 14. Which of the following numbers is the SMALLEST? A) 8.7 x 103. B) 3 x 104. C) 1.3 x 108. D) 9 x 102. Show Answer Correct Answer: D) 9 x 102. 15. Anything in motion has ..... energy. A) Potential. B) Kinetic. C) Thermal. D) None of above. Show Answer Correct Answer: B) Kinetic. 16. The energy required to heat one kilogram of a substance 1 $^ \circ$C A) Latent heat. B) Specific heat capacity. C) Calorimetry. D) None of above. Show Answer Correct Answer: B) Specific heat capacity. 17. An object is 40 m high and has a mass of 40 kg. When it falls, what will be the velocity of the object right before it hits the ground (assuming no friction)? $PE=KE, mgh=1/2mv^2$ A) 20 m/s. B) 28 m/s. C) 13 m/s. D) 56 m/s. Show Answer Correct Answer: B) 28 m/s. 18. Equation for voltage A) Current x resistance. B) Current / resistance. C) Resistance / current. D) Amps x current. Show Answer Correct Answer: A) Current x resistance. 19. What is electricity? A) Rays of light. B) The movement of electrons. C) Energy flows. D) Magic beams. Show Answer Correct Answer: B) The movement of electrons. 20. The rate at which a falling object gains speed A) Acceleration due to gravity. B) Terminal velocity. C) Air resistance. D) None of above. Show Answer Correct Answer: A) Acceleration due to gravity. ← 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