This quiz works best with JavaScript enabled. Home > Science > Physics > Physics – Quiz 36 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 36 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the unit for electrostatic charge? A) Coulombs. B) Newtons. C) Meters. D) Joules. Show Answer Correct Answer: A) Coulombs. 2. Out of the following, which is not emitted by radioactive substance? A) Electrons. B) Neutrons. C) Alpha particles. D) Electromagnetic radiations. Show Answer Correct Answer: B) Neutrons. 3. An attractive force exists between which two particles? A) Two neutrons. B) An electron and a neutron. C) An electron and a proton. D) Two electrons. Show Answer Correct Answer: C) An electron and a proton. 4. A 931-g object is attached to a spring with spring constant of 587 N/m and is undergoing simple harmonic motion. What is the object's horizontal displacement if the spring force is 50 N? A) -0.09 m. B) 0.09 m. C) -0.9 m. D) 0.9 m. Show Answer Correct Answer: A) -0.09 m. 5. A policeman traveling 19.5 m/s spots a speeder ahead, so he accelerates his vehicle at a steady rate of 1.81 m/s2 for 3.2 s, at which time he catches up with the speeder. What distance does the police car cover in that time? A) 35.98 m. B) 56.32 m. C) 71.67 m. D) 91.02 m. Show Answer Correct Answer: C) 71.67 m. 6. $ V=\ VmSin\omega t$ is the wave equation for A) Sinusoidal fuction. B) Cosine fuction. C) Tan function. D) None of these. Show Answer Correct Answer: A) Sinusoidal fuction. 7. If no external force acts on a system of bodies, the total linear momentum of the system of bodies remains constant. Which law states this? A) Newton first law. B) Newton second law. C) Newton third law. D) Principle of conservation of linear momentum. Show Answer Correct Answer: D) Principle of conservation of linear momentum. 8. A hacky sack is thrown up into the air with an initial velocity 3 m/s. What is the hang time of the hacky sack if it returns to the same point from which it was thrown? A) 0.3 seconds. B) 0.61 seconds. C) 1.2 seconds. D) 3.26 seconds. Show Answer Correct Answer: B) 0.61 seconds. 9. In the expression $ \frac{A}{B \cdot C}$, A has 5 significant figures, B has 2 significant figures, and C has 3 significant figures. How many significant figures does the quotient have? A) 2. B) 3. C) 4. D) 1. Show Answer Correct Answer: A) 2. 10. What will be the effect on gravitational acceleration if the earth suddenly stops its rotation? A) It will reduce at the poles. B) It will increase at the poles. C) It will increase at the equator. D) It will decrease at the equator. Show Answer Correct Answer: B) It will increase at the poles. 11. What material partiallyopposes a capacitor's electric field but can increase capacitance and preventthe capacitor's plates from touching? A) Dielectric. B) Condenser. C) Conductor. D) Capacitor. Show Answer Correct Answer: A) Dielectric. 12. A cyclist rides 300 m up a slope in 50 s. She then rides down the slope in 25 s. What is her average speed for the whole journey? A) 4.0 m / s. B) 8.0 m / s. C) 9.0 m / s. D) 16 m / s. Show Answer Correct Answer: B) 8.0 m / s. 13. Light from the star, Alpha Centauri, which is nearest to the earth after the sun, reaches the earth in A) 4.2 seconds. B) 42 seconds. C) 4.2 years. D) 42 years. Show Answer Correct Answer: C) 4.2 years. 14. After some rather exhausting counting (and a rather tall tale), a physics teacher determines that a very small sample of an object contains 8.25749 x 1017 protons and 5.26 x 1014 electrons; the charge on this object is ..... Coulombs. A) 0.132. B) 0.0132. C) 0.00132. D) 0.1320. Show Answer Correct Answer: A) 0.132. 15. UNIT OF FORCE IS A) JOULE. B) COULOMB. C) NEWTON. D) KELVIN. Show Answer Correct Answer: C) NEWTON. 16. A device can produce sound with a frequency range of 20 Hz-20 kHz(20 000 Hz). What is the most appropriate for the device? A) Infrasonic device. B) Ultrasonic device. C) Infrared device. D) Ultraviolet device. Show Answer Correct Answer: B) Ultrasonic device. 17. If we have more oxygen in air what will happen? A) It causes fire. B) It causes water. C) It will be comfortable for us since we have lot of oxygen to breath. D) None of above. Show Answer Correct Answer: A) It causes fire. 18. What is the correct formula to find the resultant force? A) Change in momentum/ time. B) Change in velocity/time. C) Change in mass/ time. D) None of above. Show Answer Correct Answer: A) Change in momentum/ time. 19. At what temperature a body will not radiate any heat energy? A) 0$^ \circ$C. B) 100$^ \circ$C. C) 273$^ \circ$C. D) -273$^ \circ$C. Show Answer Correct Answer: D) -273$^ \circ$C. 20. Two football players with mass 75 kg and 100 kg run directly toward each other with speeds of 6 m/s and 8 m/s respectively. If they grab each other as they collide, the combined speed of the two players just after the collision would be A) 2 m/s. B) 3.4 m/s. C) 4.6 m/s. D) 7.1 m/s. Show Answer Correct Answer: A) 2 m/s. ← 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