This quiz works best with JavaScript enabled. Home > Science > Physics > Physics – Quiz 26 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 26 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Parsec is a unit of..... A) Time. B) Energy. C) Pressure. D) Astronomical distance. Show Answer Correct Answer: D) Astronomical distance. 2. In lenses, if the image distance is greater than the object distance, then the magnification of the lens is A) > 1. B) < 1. C) = 1. D) No relation. Show Answer Correct Answer: A) > 1. 3. Consider two vectors both directed to the east and with a magnitude of 10 m. What will be the resultant vector when they are added? A) 10 m, east. B) 20 m, east. C) 0. D) 5 m, east. Show Answer Correct Answer: B) 20 m, east. 4. What is represented by the area under a force-displacement graph? A) Rate of change of kinetic energy. B) Change in momentum. C) Work done. D) Acceleration. Show Answer Correct Answer: C) Work done. 5. Natural radioactivity was discovered by A) Marie Curie. B) Enrico Fermi. C) Ernest Rutherfor. D) Henri Becquerel. Show Answer Correct Answer: D) Henri Becquerel. 6. A ray of light passing through the focal point at an angle to the optic axis of a concave mirror is reflected back A) In the horizontal direction. B) Through the center of the sphere. C) Parallel to the optic axis. D) Through the focal point. Show Answer Correct Answer: C) Parallel to the optic axis. 7. If a car moves 12 km North, 19 km East, and 12 km South, what is its displacement? A) 12 km, West. B) 43 km, South. C) 19 km, East. D) 31 km, North. Show Answer Correct Answer: C) 19 km, East. 8. What is the SI unit of work? A) Jewels (J). B) What (W). C) Watt (W). D) Joule (J). Show Answer Correct Answer: D) Joule (J). 9. It is the energy stored in objects that can be stretched or compressed A) ELASTIC POTENTIAL ENERGY. B) ELASTIC ENERGY. C) FLEXIBILITY. D) ELASTICITY. Show Answer Correct Answer: A) ELASTIC POTENTIAL ENERGY. 10. Metric ton= ..... quintal A) 4. B) 57. C) 12. D) 10. Show Answer Correct Answer: D) 10. 11. How can you tell one form of electromagnetic energy from another? A) Wavelength. B) Color. C) Amplitude. D) Speed. Show Answer Correct Answer: A) Wavelength. 12. An object moving in the +x direction experiences an acceleration of +2.0 m/s2. This means the object A) Travels 2.0 m in every second. B) Is traveling at 2.0 m/s. C) Is decreasing its velocity by 2.0 m/s every second. D) Is increasing its velocity by 2.0 m/s every second. Show Answer Correct Answer: B) Is traveling at 2.0 m/s. 13. What is the unit used to express the magnitude of an object's ability to store electric charge? A) Newton. B) Watts. C) Volts. D) Farad. Show Answer Correct Answer: D) Farad. 14. What is the gradient of a line on a velocity time graph an indicate? A) The distance travelled by an object. B) The instantaneous speed of an object. C) The acceleration of an object. D) None of above. Show Answer Correct Answer: C) The acceleration of an object. 15. Which law states, "The radiant energy emitted by a black body per unit area per unit time is directly proportional to the fourth power of its absolute temperature" . A) Stefan's Law. B) Doppler's Effect. C) Kirchhoff's Law. D) Newton's law of cooling. Show Answer Correct Answer: A) Stefan's Law. 16. The unit of surface tension is A) N/m2. B) N/m.s. C) N/m. D) Pa.s. Show Answer Correct Answer: C) N/m. 17. These are used to control the amount of current. A) Capacitors. B) Resistors. C) Dielectric. D) Insulators. Show Answer Correct Answer: B) Resistors. 18. Which equation defines Elastic Potential Energy? A) U = x. B) U = k x. C) U = 1/2 k x. D) U = 1/2 k x2. Show Answer Correct Answer: D) U = 1/2 k x2. 19. How does light travel A) It curves around corners. B) Really slow. C) In a straight line. D) In circles. Show Answer Correct Answer: C) In a straight line. 20. What does a horizontal line on a velocity-time graph indicate? A) Constant distance. B) Constant velocity. C) Constant acceleration. D) None of above. Show Answer Correct Answer: B) Constant velocity. ← 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