This quiz works best with JavaScript enabled. Home > Science > Physics > Physics Basics > 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. Physics variable for 198 N A) W. B) KE. C) M. D) F. Show Answer Correct Answer: D) F. 2. Which field of Physics is concerned with the study of heat and its effects on matter? A) Optics. B) Mechanics. C) Electromagnetism. D) Thermodynamics. Show Answer Correct Answer: D) Thermodynamics. 3. Equation for speed A) Distance / time. B) Distance x time. C) Time / distance. D) Distance + time. Show Answer Correct Answer: A) Distance / time. 4. Define the reference point A) Starting point of an object. B) Pull or push. C) Object's distanceand direction. D) None of above. Show Answer Correct Answer: A) Starting point of an object. 5. In a distance-time graph, the slope gives the A) Distance travelled. B) The time taken. C) The velocity (speed). D) The acceleration. Show Answer Correct Answer: C) The velocity (speed). 6. A lens of focal length 12 cm forms an erect image, three times the size of the object. The distance between the object and image is: A) 8 cm. B) 16 cm. C) 24 cm. D) 36 cm. Show Answer Correct Answer: A) 8 cm. 7. If all objects are moving as the exact same speed, which would have the greatest kinetic energy? A) Tennis ball. B) Football. C) Notebook. D) Box of 20 textbooks. Show Answer Correct Answer: D) Box of 20 textbooks. 8. A CONCAVE LENS OF SUITABLE FOCAL LENGTH IS USED FOR CORRECTING A: A) MYOPIC EYE. B) HYPERMETROPIC EYE. C) BOTH A & B. D) NEITHER A & B. Show Answer Correct Answer: A) MYOPIC EYE. 9. In which of the following situations do your arms do work on books? A) Holding a heavy stack of books while standing. B) Carrying a heavy stack of books. C) Dropping a stack of books onto a table. D) Picking up a pile of books from the floor. Show Answer Correct Answer: D) Picking up a pile of books from the floor. 10. A bug flies into the windshield of a car going the opposite way. Which of the following are true. A) The force of impact is the same for both. B) The impulse is the same for both. C) The acceleration of the bug is larger than the truck. D) A, B, and C are all true. Show Answer Correct Answer: D) A, B, and C are all true. 11. A ideal gas has a pressure of 100kPa and a volume of 5m3. If it is compressed to a volume of 2m3, what will the pressure of the gas be? A) 20kPa. B) 40kPa. C) 250kPa. D) 500kPa. Show Answer Correct Answer: C) 250kPa. 12. The force acting on a unit area on an object A) Contact force. B) Non contact force. C) Pressure. D) Density. Show Answer Correct Answer: C) Pressure. 13. When a racket hits a ball, energy is transferred from the racket's kinetic energy store to the ball's kinetic energy store. This energy is transferred ..... A) By heating. B) Electrically. C) Mechanically. D) None of above. Show Answer Correct Answer: C) Mechanically. 14. The half-life of a radioactive substance is 3 days. How much time is required for 10 g of the substance to decay until 1.25 g is left? A) 9 days. B) 3 days. C) 6 days. D) 12 days. Show Answer Correct Answer: A) 9 days. 15. What surface has more friction:ice or carpet? A) Carpet. B) Ice. C) They're the same. D) None of above. Show Answer Correct Answer: B) Ice. 16. Which Branch of Physics is most important when studying the effects of moving near the speed of light? A) Quantum Mechanics. B) Waves & Wave mechanics. C) Relativity. D) Electromagnetism. Show Answer Correct Answer: C) Relativity. 17. What does the author explain in this passage? A) The author explains the force of friction, using the different kinds of music as examples. B) The author explains the sport of soccer, using examples of current teams and players. C) The author explains the idea of motion, using different sports as examples. D) The author explains the importance of bike safety, using helmets as an example. Show Answer Correct Answer: C) The author explains the idea of motion, using different sports as examples. 18. What is physics? A) The study of inheritance. B) The study of matter. C) The study of the natural world. D) None of above. Show Answer Correct Answer: C) The study of the natural world. 19. NO FORCE ACTS ON A CURRENT CARRYING CONDUCTOR WHEN IT IS PLACED A) PERPENDICULAR TO THE MAGNETIC FIELD. B) PARALLEL TO THE MAGNETIC FIELD. C) FAR AWAY FROM THE MAGNETIC FIELD. D) INSIDE A MAGNETIC FIELD. Show Answer Correct Answer: B) PARALLEL TO THE MAGNETIC FIELD. 20. Uses for Infrared radiation A) Telescopes, TV remotes, thermal imaging. B) TV remotes, cell phones, kills cancer cells. C) Tanning, blacklight, thermal imaging. D) View bones, kills bones, TV remotes. Show Answer Correct Answer: A) Telescopes, TV remotes, thermal imaging. ← PreviousNext →Related QuizzesPhysics QuizzesScience QuizzesPhysics Quiz 1Physics Quiz 2Physics Quiz 3Physics Quiz 4Physics Quiz 5Physics Quiz 6Physics Quiz 7Physics Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books