This quiz works best with JavaScript enabled. Home > Science > Physics > Physics Basics > Physics – Quiz 34 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 34 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Electrical power is measured in A) Joules. B) Watts. C) Amps. D) Volts. Show Answer Correct Answer: B) Watts. 2. According to the law of reflection the angle of reflection is A) Equal to the angle of incidence. B) More than the angle of incidence. C) Less than the angle of incidence. D) None of above. Show Answer Correct Answer: A) Equal to the angle of incidence. 3. A large box of mass 4 kg slides across a frictionless surface with a velocity of 12 m/s to the right. It collides with a smaller box of mass 2 kg that is stationary. The boxes stick together. What is the velocity of the two combined masses after collision? A) 8 m/s, to the left. B) 4 m/s, to the left. C) 8 m/s, to the right. D) 4 m/s, to the right. Show Answer Correct Answer: C) 8 m/s, to the right. 4. What is the energy released when there is mass defect of 0.01g? A) 9 x 1011 J. B) 9 x 1014 J. C) 3 x 106 J. D) 1 x 10-19 J. Show Answer Correct Answer: A) 9 x 1011 J. 5. Which of the following in the LARGEST number? A) 9 x 106. B) 8 x 1010. C) 1.3 x 1012. D) 5.3 x 103. Show Answer Correct Answer: C) 1.3 x 1012. 6. Write 0.00000707 in scientific notation. A) 7.07 x 10-6. B) 7.07 x 106. C) 707 x 108. D) 707 x 10-8. Show Answer Correct Answer: A) 7.07 x 10-6. 7. The minimum frequency for which the photoelectric effect can occur is called the A) Absolute frequency. B) Cut off frequency. C) Lyman frequency. D) Threshold frequency. Show Answer Correct Answer: D) Threshold frequency. 8. How far is an object pushed if 250 J of work is done with a force of 5 N? A) 1250 m. B) 50 m. C) 500 m. D) 245 m. Show Answer Correct Answer: B) 50 m. 9. Branches of physics that studies the nature and behaviour of light A) Plasma Physics. B) Acoustics. C) Optics. D) Solid State Physics. Show Answer Correct Answer: C) Optics. 10. Two objects have different temperatures. Object A has a temperature of 42 degrees and Object B is 37 degrees. Which direction should the energy transfer between Objects A and B? A) From Object A to Object B. B) From Object B to Object A. C) Energy will not transfer. D) Energy will transfer both directions. Show Answer Correct Answer: A) From Object A to Object B. 11. What is 67, 490 rounded to 2 significant figures? A) 67 500. B) 60 000. C) 68, 000. D) 67, 000. Show Answer Correct Answer: D) 67, 000. 12. The sensitivity of a liquid-in-glass thermometer can be increased by A) Having a thick-walled bulb. B) Increasing the diameter of the column. C) Decreasing the size of the bulb. D) Increasing the length of the column. Show Answer Correct Answer: C) Decreasing the size of the bulb. 13. Complementary colors are two colors that A) Are next to each other on the color chart. B) Produce white light when added together. C) Look good together. D) Are primary colors. Show Answer Correct Answer: B) Produce white light when added together. 14. Which model of the atom said that electrons circle the nucleus in orbits of a fixed radius? A) Bohr model. B) Quantum mechanical model. C) Not true of either model. D) Both Bohr and Quantum mechanical model. Show Answer Correct Answer: A) Bohr model. 15. The main reason why the weak force have a short range (about $10^{-18}$m) is: A) Because its exchange particles have little masses. B) Because its exchange particles have no mass. C) Because its exchange particles have large masses. D) Because its exchange particles have equal masses. Show Answer Correct Answer: C) Because its exchange particles have large masses. 16. Final velocity-initial velocity A) Change in velocity. B) Displacement. C) Speed. D) None of above. Show Answer Correct Answer: A) Change in velocity. 17. Nuclear Fission A) Is a process of splitting a heavy nucleus into two lighter nuclei. Accompanied with the release of enormous amount of energy from the mass defect. B) Is a self-sustaining reaction in which the products of the reaction can initiate another similar reaction. Accompanied with the release of enormous amount of energy from the mass defect. C) Is a process of combination of two lighter nuclei to form a heavier nuclei. Accompanied with the release of enormous amount of energy from the mass defect. D) None of above. Show Answer Correct Answer: A) Is a process of splitting a heavy nucleus into two lighter nuclei. Accompanied with the release of enormous amount of energy from the mass defect. 18. SI unit of time is: A) Minute. B) Second. C) Mili seconds. D) Hour. Show Answer Correct Answer: B) Second. 19. Which component is not required to determine the work of a falling object? A) Mass. B) Acceleration. C) Distance. D) Time. Show Answer Correct Answer: D) Time. 20. Find the velocity of a truck that travels 75 miles north in 2.5 hours. A) 187.5 mph north. B) 30 mph north. C) 300 mph north. D) 200 mph north. Show Answer Correct Answer: B) 30 mph north. ← 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