This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Physics > Physics – Quiz 17 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 17 (21 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. It is the rate of doing work. That also is the rate at which energy is transferred. A) TORQUE. B) POWER. C) ENERGY. D) WORK. Show Answer Correct Answer: B) POWER. 2. What is the unit for spring constant? A) Nm. B) N/m. C) N. D) M. Show Answer Correct Answer: B) N/m. 3. The speed of sound in the atmosphere is most affected by variations in which of the following? A) Sound frequency (cps). B) Ambient temperature. C) Barometric pressure. D) None of above. Show Answer Correct Answer: B) Ambient temperature. 4. One reason why the sky appears blue is because A) Blue light is scattered to a greater extent than red light. B) Red light is reflected by the atmosphere. C) Much more red light than blue light is absorbed by air atoms. D) Red light is reflected by the atmosphere. Show Answer Correct Answer: A) Blue light is scattered to a greater extent than red light. 5. What is Canada's National Animal? A) Pig. B) Beaver. C) Monkey. D) Horse. Show Answer Correct Answer: B) Beaver. 6. Which law states, "Signifies that good absorbers are good emitters" . A) Stefan's Law. B) Newton's law of cooling. C) Kirchhoff's Law. D) Doppler's Effect. Show Answer Correct Answer: C) Kirchhoff's Law. 7. There are many factors that contribute to the overall crashworthiness of a vehicle. Which of the following is NOT a factor that you should consider when judging if a car has good crashworthiness? A) Vehicle structure. B) Restraint systems. C) Resale price. D) Alterations and repairs. Show Answer Correct Answer: C) Resale price. 8. Which is a unit of wavelength? A) Meter. B) Second. C) Meter per second. D) Hertz. Show Answer Correct Answer: A) Meter. 9. What science investigates the fundamental concepts of matter, energy, and space, and the relationships among them. A) Mathematics. B) Biology. C) Physics. D) Chemistry. Show Answer Correct Answer: C) Physics. 10. This theorem states that the impulse given to an object is equal to the change in its momentum. A) IM-Theorem. B) Impulsive Theorem. C) Momentary-impulse Theorem. D) Impulse-Momentum Theorem. Show Answer Correct Answer: D) Impulse-Momentum Theorem. 11. Which are the primary Colours? A) Red, Green, Blue. B) Red, Green, White. C) Yellow, Green, Blue. D) Red, Magenta, Blue. Show Answer Correct Answer: A) Red, Green, Blue. 12. Why are you more stable when riding a bicycle at a faster speed? A) The bike has more momentum. B) You have more mass. C) It's not easier to ride at a faster speed. D) The wheels have angular momentum. Show Answer Correct Answer: D) The wheels have angular momentum. 13. In physics, which of the following factors are necessary to determine power 1. Force exerted 2. Distance moved 3. Time required A) 1 and 2. B) 2 and 3. C) 1, 2 and 3. D) None of above. Show Answer Correct Answer: C) 1, 2 and 3. 14. Which of the following situation DOES NOT show an object that experiences impulse? A) A ring moving at 5 m/s eastward. B) A rubber ball bouncing up and down the ground. C) A confetti thrown from the ceiling of a concert venue. D) A car moving at 7 m/s left then right at the same speed. Show Answer Correct Answer: A) A ring moving at 5 m/s eastward. 15. Which atmospheric conditions will cause the true landing speed of an aircraft to be the greatest? A) Low temperature with low humidity. B) High temperature with low humidity. C) High temperature with high humidity. D) None of above. Show Answer Correct Answer: C) High temperature with high humidity. 16. Which object has the greatest weight? A) An object of mass 50 kg in a 3.0 N/ kg gravitational field. B) An object of mass 10 kg in a 15 N/ kg gravitational field. C) An object of mass 15 kg in a 13 N/ kg gravitational field. D) An object of mass 20 kg in a 9.0 N/ kg gravitational field. Show Answer Correct Answer: C) An object of mass 15 kg in a 13 N/ kg gravitational field. 17. Mr. Lee Jung Suk pushed a seesaw with a force of 10 N, 45$^ \circ$ with respect to the lever arm. The force he applied is 0.45 m away from the fulcrum. How much torque did he apply? A) 5.18 J. B) 5.18 Nm. C) 3.18 Nm. D) 3.18 J. Show Answer Correct Answer: C) 3.18 Nm. 18. Nuclear sizes are expressed in a unit named A) Angstrom. B) Newton. C) Tesla. D) Fermi. Show Answer Correct Answer: D) Fermi. 19. Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum A) 2.8 km, 0.25 km. B) 1.8 km, 0.15 km. C) 2.2 km, 0.20 km. D) 3.3 km, 0.30 km. Show Answer Correct Answer: D) 3.3 km, 0.30 km. 20. What would the circuit resistance be if a 7.5 Amp draw was present with the engine running and the charging system producing 15 Volts A) 15 Ohms. B) 4 Ohms. C) 0.3333 Ohms. D) 2 Ohms. Show Answer Correct Answer: D) 2 Ohms. 21. What is the net force? 100 N 230 N< ..... $\rightarrow$Note:Force is a vector quantity. You can apply vector addition here. A) 130 N, to the left. B) 330 N, to the left. C) 330 N, to the right. D) 130 N, to the right. Show Answer Correct Answer: D) 130 N, to the right. ← PreviousRelated QuizzesScience QuizzesGeneral Knowledge 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