This quiz works best with JavaScript enabled. Home > Science > Physics > Physics – Quiz 47 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 47 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the material waves travel through? A) Period. B) Frequency. C) Medium. D) Hertz. Show Answer Correct Answer: C) Medium. 2. Light travels through a liquid at 2.25 EE 8 m/s. What is the index of the liquid? A) 1.33. B) 1.0. C) 1.523. D) 2.45. Show Answer Correct Answer: A) 1.33. 3. The law of universal gravitation states that any two objects in the universe that have mass, without exception ..... A) Attract each other. B) Repel each other. C) Combine to provide a balanced force. D) Create friction. Show Answer Correct Answer: A) Attract each other. 4. What is the derived unit for energy? A) Watts. B) Kilojoules. C) Joules. D) Kilograms per cubic meter. Show Answer Correct Answer: C) Joules. 5. Quantum Mechanics is one of the fields in Modern Physics. Which of the following is a scope of study of Quantum Mechanics? A) Speed less than 1% of the speed of light. B) Regularly sized objects. C) Microscopic objects. D) Involves weak gravitational fields. Show Answer Correct Answer: C) Microscopic objects. 6. Which of the following prefix is equivalent to 10-6? A) Mega. B) Micro. C) Milli. D) Nano. Show Answer Correct Answer: B) Micro. 7. The electric current changes its direction periodically. A) Ohm's Law. B) Electric Current. C) Direct Current (DC). D) Alternating Current (AC). Show Answer Correct Answer: D) Alternating Current (AC). 8. Moving masses cause disturbances in this ..... A) Space. B) Gravity. C) Astronomy. D) Speed. Show Answer Correct Answer: A) Space. 9. Which would not typically be found around black hole? A) Accretion disk. B) Jet. C) Wormhole. D) Orbiting companion star. Show Answer Correct Answer: C) Wormhole. 10. What will happen to the acceleration due to gravity that an object experiences if from Earth, it is transported to Jupiter? A) It increases. B) It decreases. C) It stays the same. D) It becomes zero. Show Answer Correct Answer: A) It increases. 11. Things orbit in a(n) ..... A) Circle. B) Ellsip. C) Square. D) Parabola. Show Answer Correct Answer: B) Ellsip. 12. Which of the following is a problem that some people blame on technology? A) Widespread pollution. B) Improved transportation. C) Reduction of acid rain. D) Economic growth. Show Answer Correct Answer: A) Widespread pollution. 13. Intensity of sound has A) No existence. B) An object existence. C) A subject existence. D) Both subjective and objective existence. Show Answer Correct Answer: B) An object existence. 14. How many yards is 9 mi? A) 12 672 yards. B) 14 500 yards. C) 15 840 yards. D) 16 040 yards. Show Answer Correct Answer: C) 15 840 yards. 15. Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension? A) Impulse and moment of force. B) Pressure and Young's modules. C) Planck's constant and Angular momentum. D) Force and rate of change of linear momentum. Show Answer Correct Answer: A) Impulse and moment of force. 16. An electron traveling horizontally from North to South enters a region where a uniform electric field is directed downward. What is the direction of the electric force exerted on the electron once it has entered the field? A) To the east. B) To the west. C) Upward. D) Downward. Show Answer Correct Answer: C) Upward. 17. Hot sand cools off faster at night than plants and vegetation. Then, the specific heat capacity of sand is A) Less than that of plants. B) More than that of plants. C) Likely the same as that of plants. D) Not enough information to answer. Show Answer Correct Answer: A) Less than that of plants. 18. If the fluid pressure is 800 psi in a 1/2 inch line supplying an actuating cylinder with a piston aren of 10 square inches, the force exerted on the piston will be A) 4000 pounds. B) 8000 pounds. C) 800 pounds. D) None of above. Show Answer Correct Answer: B) 8000 pounds. 19. The light is focused by the lens system of the eye into an inverted image at the photosensitive ..... A) Cornea. B) Eye muscle. C) Optical Nerve. D) Retina. Show Answer Correct Answer: D) Retina. 20. If we have two resistors ( $ R_1$ = 20 $ \Omega$, $ R_2$ = 40 $ \Omega$ ) connected in series, then $ R_{eq}$ in ( $ \Omega$ ) is A) 2. B) 13.3. C) 60. D) 20. Show Answer Correct Answer: C) 60. ← 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