This quiz works best with JavaScript enabled. Home > Science > Physics > Physics Basics > Physics – Quiz 31 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 31 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which Branch of Physics is most important when studying how glasses help people see? A) Mechanics. B) Optics. C) Thermodynamics. D) Electromagnetism. Show Answer Correct Answer: B) Optics. 2. What is Specific Heat? A) The amount of thermal energy required to increase the temperature of 1kg of a material by 1$^ \circ$C. B) The amount of radiant energy required to increase the temperature of 1kgof a material by 1$^ \circ$C. C) The amount of energy required to increase the temperature of 1kgof a material by 1$^ \circ$C. D) The amount of friction required to increase the temperature of 1kgof a material by 1$^ \circ$C. Show Answer Correct Answer: A) The amount of thermal energy required to increase the temperature of 1kg of a material by 1$^ \circ$C. 3. A lack of precision in scientific measurements typically arises from A) Limitations of the measuring instrument. B) Human error. C) Lack of calibration. D) Too many significant figures. Show Answer Correct Answer: A) Limitations of the measuring instrument. 4. Which of the following is a valid statement? A) A measurement that is not precise can be accurate. B) A measurement that is precise is always accurate. C) A measurement that is not precise will always be inaccurate. D) Repeated measurements will always increase accuracy and precision. Show Answer Correct Answer: A) A measurement that is not precise can be accurate. 5. If the distance time graph is a curved line: A) A non-uniform speed is maintained by the object. B) The object covers unequal distances in equal intervals of time. C) Both A and B. D) None of the above. Show Answer Correct Answer: C) Both A and B. 6. Convection can NOT occur in which one of the following substances? A) Water. B) Ice. C) Steam. D) Water Vapour. Show Answer Correct Answer: B) Ice. 7. Which SI base unit would you use to measure a term at your school? A) M. B) S. C) Kg. D) K. Show Answer Correct Answer: B) S. 8. What is 0.000328 rounded to 1 significant figure? A) 0. B) 0.0003. C) 0.00033. D) 0.000328. Show Answer Correct Answer: B) 0.0003. 9. The SI units J/g$^ \circ$C measures A) Specific heat. B) Mass. C) Temperature. D) Heat energy. Show Answer Correct Answer: A) Specific heat. 10. Which of the following best describes the graph of force against extension for a spring? A) A straight line with an intercept on the y axis. B) A straight line through the origin. C) A straight line through the origin, up to a limit of proportionality. D) An upward curve that passes through the origin. Show Answer Correct Answer: C) A straight line through the origin, up to a limit of proportionality. 11. It is an area of Physics that studies structures, properties, and behavior of atom. A) Relativity. B) Electromagnetism. C) Thermodynamics. D) Quantum Mechanics. Show Answer Correct Answer: D) Quantum Mechanics. 12. In the scientific revolution ..... studied several areas of what we call physics today and did a lot of work with motion using pendulums. A) Albert Einstein. B) Isaac Newton. C) Galileo Galilei. D) None of above. Show Answer Correct Answer: C) Galileo Galilei. 13. Final velocity is 5m/s, initial velocity is 1m/s, time taken for change is 2 seconds. Calculate the acceleration, with correct units A) 1m/s. B) 2m/s. C) 1m/s2. D) 2m/s2. Show Answer Correct Answer: D) 2m/s2. 14. A student is 2.50m away from a convex lens while her image is 1.80m from the lens, what is the focal length? A) 1.05m. B) 2.50m. C) 1.39m. D) 0.72m. Show Answer Correct Answer: A) 1.05m. 15. Newton's SECOND Law states: A) An object will go in a straight line. B) F = ma. C) Acceleration is proportional to force and inversely proportional to mass (a = F/m). D) Forces are equal and opposite in direction. Show Answer Correct Answer: C) Acceleration is proportional to force and inversely proportional to mass (a = F/m). 16. Which SI base unit would you use to measure the mass of a sport's car? A) M. B) S. C) Kg. D) K. Show Answer Correct Answer: C) Kg. 17. Parts of an atom which carry no electric charge A) Neutrons. B) Electrons. C) Protons. D) None of above. Show Answer Correct Answer: A) Neutrons. 18. How high or low a sound is; depends on the frequency (greater frequency= higher pitch) A) Pitch. B) Frequency. C) Sound. D) Medium. Show Answer Correct Answer: A) Pitch. 19. Miguel is lifting a 120 kg mass from the floor to a height of 2.50 m during gym class. The gravitational potential energy of the weight when it is lifted is A) 30.6 J. B) 3.00 x 102J. C) 4.70 x 102 J. D) 2.94 x 103 J. Show Answer Correct Answer: D) 2.94 x 103 J. 20. Express the following in scientific notation:.000457 A) 457 x 106. B) 457 x 10-6. C) 4.57 x104. D) 4.57 x 10-4. Show Answer Correct Answer: D) 4.57 x 10-4. ← 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