This quiz works best with JavaScript enabled. Home > Science > Physics > Physics – Quiz 23 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 23 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. One of the physical quantities which is not a derived quantity A) Acceleration. B) Length. C) Force. D) Velocity. Show Answer Correct Answer: B) Length. 2. Throwing an egg against the wall made it break because the wall applied a larger force over? . A) A shorter time. B) A longer time. C) The same time. D) A large area. Show Answer Correct Answer: A) A shorter time. 3. A 5000N block is lifted 10 m. How much work was done? A) 50000 J. B) 5000 J. C) 500 J. D) 50 J. Show Answer Correct Answer: A) 50000 J. 4. It is the closeness of the obtain value to the accepted value. A) Precision. B) Accuracy. C) Both A & B. D) Neither A nor B. Show Answer Correct Answer: B) Accuracy. 5. Identify the vector quantity from the following A) Time. B) Heat. C) Work. D) Angular momentum. Show Answer Correct Answer: D) Angular momentum. 6. The smallest particle to which an element can be reduce while still keeping the properties of that element is A) Atom. B) Molecule. C) Proton. D) Electron. Show Answer Correct Answer: A) Atom. 7. A boy lifts a box of toys that weighs 12 N. The box is lifted 0.006 m. How much work does the student do? A) 0.072 J. B) 0.073 J. C) 0.074 J. D) 0.075. Show Answer Correct Answer: A) 0.072 J. 8. How would you write 564, 000, 000 in scientific notation? A) 5.64 x 10-7. B) 5.64 x 10 6. C) 56.4 x 10 7. D) 5.64 x 10 8. Show Answer Correct Answer: D) 5.64 x 10 8. 9. What is a capacitor? A) A device for storing energy. B) A device for storing p.d. C) A device for storing charge. D) A device for storing capacitance. Show Answer Correct Answer: C) A device for storing charge. 10. People in serious car crashes experience very high g's and this raises the probability of ..... A) Seizures. B) Hallucination. C) Injury. D) Cramping in muscles3. Show Answer Correct Answer: C) Injury. 11. RADAR is used for A) Locating geostationary satellites. B) Locating submerged submarines. C) Receiving a signals in a radio receiver. D) Detecting and locating the position of objects such as aeroplanes. Show Answer Correct Answer: D) Detecting and locating the position of objects such as aeroplanes. 12. The speed of sound in the atmosphere A) Varies according to the frequency of the sound. B) Changes with a change in temperature. C) Changes with a change in pressure. D) None of above. Show Answer Correct Answer: B) Changes with a change in temperature. 13. A toy has been dropped off by a kid on the 19th floor of his family's condominium unit. The unit is 40 m high. Disregarding air resistance, how long will the toy reach the ground? A) 5.00 s. B) 4.00 s. C) 2.85 s. D) 2.35 s. Show Answer Correct Answer: C) 2.85 s. 14. A hacky sack is thrown up into the air with an initial velocity 3 m/s. What maximum height does the hacky sack reach? A) 0.15 m. B) 0.46 m. C) 0.92. D) 1.8 m. Show Answer Correct Answer: B) 0.46 m. 15. Magnetism at the centre of a bar magnet is A) Zero. B) Minimum. C) Maximum. D) Minimum or maximum. Show Answer Correct Answer: A) Zero. 16. Which law states, "the effect produced by a moving source of waves in which there is an apparent upward shift in frequency for observers towards whom the source is approaching and an apparent downward A) Stefan's Law. B) Doppler's Effect. C) Kirchhoff's Law. D) Newton's law of cooling. Show Answer Correct Answer: B) Doppler's Effect. 17. Radio telescopes are better than optical telescopes because A) They can detect faint galaxies which no optical telescope can. B) They can work even in cloudy conditions. C) They can work during the day and night. D) All of the above. Show Answer Correct Answer: D) All of the above. 18. What is the equivalent of 45 W in kilowatts? A) 4.50 kW. B) 0.045 kW. C) 45 000 kW. D) 45. 88 kW. Show Answer Correct Answer: B) 0.045 kW. 19. Find the displacement a hiker walks if he travels 9.0 km north, and then turns around and walks 3.0 km south? A) 0.5 km. B) 3.0 km. C) 6.0 km. D) 12.0 km. Show Answer Correct Answer: C) 6.0 km. 20. The pressure (in Pa) exerted by a force (F = 100 N) when applied over an area (A = 4 m2) is A) 400. B) 100. C) 25. D) 4. Show Answer Correct Answer: C) 25. ← 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