This quiz works best with JavaScript enabled. Home > Science > Physics > Physics – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 3 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Two forces of magnitude 20 N and 50 N act simultaneously on a body. Which one of the following forces cannot be a resultant of the two forces? A) 20 N. B) 30 N. C) 40 N. D) 70 N. Show Answer Correct Answer: A) 20 N. 2. Which among the following are primary colors? A) Red, Green, Blue. B) Yellow, Violet, Blue. C) Blue, Yellow, Green. D) Red, Magenta, Yellow. Show Answer Correct Answer: A) Red, Green, Blue. 3. What is the SI base unit for length? A) Meter. B) Kilogram. C) Kilometer. D) Second. Show Answer Correct Answer: A) Meter. 4. A 10 ohms resistor is powered by a 5-V battery. The current flowing through the source is A) 10 A. B) 50 A. C) 2 A. D) 0.5 A. Show Answer Correct Answer: D) 0.5 A. 5. A type of pulley that moves with the load and allows the effort to be less than the weight of the load A) Inclined plane. B) Movable pulley. C) Load. D) Spring scale. Show Answer Correct Answer: B) Movable pulley. 6. How many zero does the prefix Tera has? A) 6. B) 9. C) 12. D) 3. Show Answer Correct Answer: C) 12. 7. Orbital speed of a satellite is dependent of its mass. A) True. B) False. C) May be. D) Not sured. Show Answer Correct Answer: B) False. 8. Law of reflection state that-The angle of incidence is ..... to the angle of reflection. A) Equal. B) Double. C) Half. D) None of above. Show Answer Correct Answer: A) Equal. 9. Your home is 10km far from your school. To measure how long you take, which of the following equation will you use? A) T =d/S. B) T =S/d. C) T =S x d. D) T = d x S. Show Answer Correct Answer: A) T =d/S. 10. A boat travels 12.0 m while it reduces its velocity from 9.5 m/s to 5.5 m/s. What is the magnitude of the boat's acceleration while it travels the 12.0 m? A) 1.3 m/s2. B) 2.5 m/s2. C) 3.0 m/s2. D) 7.5 m/s2. Show Answer Correct Answer: B) 2.5 m/s2. 11. Poor precision in scientific measurement may arise from ..... A) The standard being too strict. B) Human error. C) Limitations of the measuring instrument. D) Both human error and the limitations of the measuring instrument. Show Answer Correct Answer: D) Both human error and the limitations of the measuring instrument. 12. Which of the following is an example of a vector quantity? A) Acceleration. B) Mass. C) Volume. D) Temperature. Show Answer Correct Answer: D) Temperature. 13. Which metal is commonly used for making an electromagnet? A) Iron. B) Nickel. C) Cobalt. D) Copper. Show Answer Correct Answer: A) Iron. 14. Materials where almost all light passes through is A) Transparent. B) Translucent. C) Opaque. D) Colored. Show Answer Correct Answer: A) Transparent. 15. Materials for rain-proof coats and tents owe their water-proof properties to A) Elasticity. B) Viscosity. C) Specific gravity. D) Surface tension. Show Answer Correct Answer: D) Surface tension. 16. What will happen to an object's moment of inertia if its mass is tripled while its distance from the axis of rotation remains unchanged? A) It will be tripled. B) It will be 1/3 its initial value. C) It will stay the same. D) It will become zero. Show Answer Correct Answer: A) It will be tripled. 17. Multiplying width and length, and then height with the answer will give us the A) Area. B) Volume. C) Density. D) Mass. Show Answer Correct Answer: B) Volume. 18. What quantity does the kilogram measure? A) Time. B) Distance. C) Force. D) Mass. Show Answer Correct Answer: D) Mass. 19. The rate at which an object moves is A) Speed. B) Velocity. C) Distance. D) Motion. Show Answer Correct Answer: A) Speed. 20. Which of the following is constant in the whole travel and equal to the initial launched of the projectile in motion? A) $ V_x$. B) $ v_y$. C) $ v_xi$. D) $ v_yi$. Show Answer Correct Answer: A) $ V_x$. ← PreviousNext →Related QuizzesScience QuizzesPhysics Quiz 1Physics Quiz 2Physics Quiz 4Physics Quiz 5Physics Quiz 6Physics Quiz 7Physics Quiz 8Physics Quiz 9Physics Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books