This quiz works best with JavaScript enabled. Home > Science > Physics > Physics Basics > Physics – Quiz 17 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 17 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Important physics concepts include a. motion. b. forces. c. energy. d. all of the above A) Motion. B) Forces. C) Energy. D) All of the above. Show Answer Correct Answer: D) All of the above. 2. Which statement is true of a positively charged object? A) Positively charged objects do not contain any electrons. B) Positively charged objects do not contain neutrons or electrons. C) There is a lack of electrons on a positively charged object. D) The protons and the electrons are both positively charged on such objects. Show Answer Correct Answer: C) There is a lack of electrons on a positively charged object. 3. Solve and round accordingly. "800.0 + 62.050-700" A) 162.05. B) 200. C) 162.050. D) 162.1. Show Answer Correct Answer: B) 200. 4. Which quantity is a vector quantity? A) Mass. B) Energy. C) Pressure. D) Momentum. Show Answer Correct Answer: D) Momentum. 5. Power of the lens is-40, its focal length is A) 4m. B) -40m. C) -0.25m. D) -25m. Show Answer Correct Answer: C) -0.25m. 6. What is the SI unit for mass? A) Newton. B) Kilogramm. C) Metres. D) Joules. Show Answer Correct Answer: B) Kilogramm. 7. What is the function of a diode? A) Stores electric charge. B) Acts as a current amplifier. C) Acts as an automatic switch. D) Allows the current to pass in one direction only. Show Answer Correct Answer: D) Allows the current to pass in one direction only. 8. A plane traveling north at 150 m/s is flying toward a runway. A cross-wind of 30 m/s begins to blow from the east. The pilot realizes he is being blown off course. At what angle must he head in order to travel directly north? A) 19 degrees east of north. B) 29 degrees east of north. C) 19 degrees west of north. D) 29 degrees east of south. Show Answer Correct Answer: A) 19 degrees east of north. 9. Which energy is being described? Masses that have work done on them to lift them up in a gravitational field A) Kinetic energy. B) Thermal energy. C) GPE. D) Elastic / strain energy. Show Answer Correct Answer: C) GPE. 10. 1 km = ..... m A) 10. B) 100. C) 1000. D) None of these. Show Answer Correct Answer: C) 1000. 11. The unit of power of lens is A) Metre. B) Centimetre. C) Diopter. D) M-1. Show Answer Correct Answer: C) Diopter. 12. Why does light refract? A) Speeds up. B) Gets hot. C) Slows down. D) Gains energy. Show Answer Correct Answer: C) Slows down. 13. Physics is concerned with which of the following matters? A) Applying physics principles. B) Describing the physical world. C) Making predictions about a broad range of phenomena. D) All of the above. Show Answer Correct Answer: D) All of the above. 14. It is the exchange particle for the electromagnetic force: A) Graviton. B) Gluon. C) Gamma photon. D) Z boson. Show Answer Correct Answer: C) Gamma photon. 15. The mass defect in a nuclear reactions is 2 x 1020 kg. What is the energy released in Joule? A) 1.8 x 10-3. B) 1.8 x 10-10. C) 6.0 x 10-10. D) 6.0 x 10-3. Show Answer Correct Answer: A) 1.8 x 10-3. 16. The volume of a liquid is usually measured in A) Kilogram. B) Litres. C) Metres. D) Ampere. Show Answer Correct Answer: B) Litres. 17. Identify at least two areas of physics involved in the following:Building a louder stereo system in your car A) Vibrations and wave phenomena, electromagnetism. B) Mechanics, vibrations and wave phenomena. C) Optics, thermodynamics. D) Thermodynamics, mechanics. Show Answer Correct Answer: A) Vibrations and wave phenomena, electromagnetism. 18. You walk 10 meters to math class in 20 seconds. Your average speed is A) 2 m/s. B) 0.5 m/s. C) 200 m/s. D) 5 m/s. Show Answer Correct Answer: B) 0.5 m/s. 19. ..... is the rate at which work is done, or energy is transferred A) Potential energy. B) Kinetic energy. C) Power. D) None of above. Show Answer Correct Answer: C) Power. 20. Calculate the following, and express the answer in scientific notation with the correct number of significant figures:21.4+15+17.17+4.003 A) 5.7573 x 101. B) 5.757 x 101. C) 5.75 x 101. D) 5.8 x 101. Show Answer Correct Answer: D) 5.8 x 101. ← 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