This quiz works best with JavaScript enabled. Home > Science > Physics > Physics – Quiz 18 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 18 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Who discovered X-Rays? A) Einstein. B) Roentgen. C) Madam Curie. D) J. J. Thomson. Show Answer Correct Answer: B) Roentgen. 2. A telescope and microscope differ in that..... A) Telescope has objective of large focal length and eyepiece of smaller focal lengths. B) Telescope's eyepiece with longer focal lengths that the oblective. C) Both are different instruments. D) None of these. Show Answer Correct Answer: A) Telescope has objective of large focal length and eyepiece of smaller focal lengths. 3. Which of the following shows a fast speed? A) 5m/s. B) 4m/s. C) 3m/s. D) 1m/s. Show Answer Correct Answer: A) 5m/s. 4. What force/s acting on the rock sitting on top of the hill? A) Weight. B) Normal Force. C) Both Weight and Normal Forces. D) Neither Weight nor Normal Forces. Show Answer Correct Answer: C) Both Weight and Normal Forces. 5. Nichrome wire is used in an electric heater because..... A) It has high resistance. B) It has high melting point. C) For all of the above reasons. D) It can resist a current upto approx 5 amperes. Show Answer Correct Answer: C) For all of the above reasons. 6. If you traveled to Jupiter, what would change? A) Your weight and mass. B) Your weight. C) Your mass. D) Your height. Show Answer Correct Answer: B) Your weight. 7. Which of the following is a longitudinal wave A) Sound wave. B) Tidal wave. C) Infra-red. D) Radio wave. Show Answer Correct Answer: A) Sound wave. 8. Which of the following quantities does not belong to the group? A) Mass. B) Force. C) Length. D) Time. Show Answer Correct Answer: B) Force. 9. Convert 22 m/s into km/hr A) 79 km/hr. B) 6.1 km/hr. C) 89 km/hr. D) 44 km/hr. Show Answer Correct Answer: A) 79 km/hr. 10. Which of these is a scientific hypothesis? A) Atoms are the smallest particles of matter that exist. B) Albert Einstein is the greatest physicist of the twentieth century. C) The universe is surrounded by a second universe, which cannot be seen. D) None of these. Show Answer Correct Answer: A) Atoms are the smallest particles of matter that exist. 11. Which of the following is acceleration? A) 10 m/s. B) 46 km/h. C) 50 cm2/s2. D) 64 km/h/min. Show Answer Correct Answer: B) 46 km/h. 12. In a speed vs. time graph, a straight line shows that acceleration is A) Decreasing. B) Increasing. C) Constatnt. D) Zero. Show Answer Correct Answer: C) Constatnt. 13. UNIT OF DISPLACEMENT IS A) METER. B) KG. C) SEC. D) NEWTON. Show Answer Correct Answer: A) METER. 14. What will happen to the change in momentum if the force of impact between two objects that collided is tripled? A) It will be tripled. B) It will be doubled. C) It will be 1/3 the original value. D) It will be halved. Show Answer Correct Answer: A) It will be tripled. 15. What is the measure of an object's ability to store electric charge? A) Electric charge. B) Capacitance. C) Dielectric. D) Capacitor. Show Answer Correct Answer: B) Capacitance. 16. What is the unit use in vertical and horizontal velocities of components of projectile motion? A) Meter. B) Meter per second. C) Meter per second square. D) Meter second. Show Answer Correct Answer: B) Meter per second. 17. What happens to gravitational waves the further you are away from the source? A) They get weaker. B) They get stronger. C) Nothing. D) They become more noticeable. Show Answer Correct Answer: A) They get weaker. 18. A device that changes electrical energy to mechanical energy that can do work is A) Generator. B) Motor. C) Mass Spectrometer. D) Resistor. Show Answer Correct Answer: B) Motor. 19. Which list contains only transverse waves? A) Infra-red waves, light waves, sound waves. B) Infra-red waves, light waves, ultraviolet waves. C) Infra-red waves, sound waves, ultraviolet waves. D) Light waves, sound waves, ultraviolet waves. Show Answer Correct Answer: B) Infra-red waves, light waves, ultraviolet waves. 20. Let a thin capillary tube be replaced with another tube of insufficient length then, we find water A) Depressed. B) Will not rise. C) Will overflow. D) Change its meniscus. Show Answer Correct Answer: B) Will not rise. ← PreviousNext →Related QuizzesScience QuizzesPhysics Quiz 1Physics Quiz 2Physics Quiz 3Physics Quiz 4Physics Quiz 5Physics Quiz 6Physics Quiz 7Physics Quiz 8Physics Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books