This quiz works best with JavaScript enabled. Home > Science > Physics > Physics Basics > Physics – Quiz 37 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 37 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following measurements is the smallest? A) 4.7 x 104 m. B) 4.7 x 104 cm. C) 4.7 x 104 mm. D) 4.7 x 104 $\mu$m. Show Answer Correct Answer: D) 4.7 x 104 $\mu$m. 2. A film projector produces a 151 cm image of a horse on a screen. If the projector lens is 400 cm from the screen and the size of the horse on the film is 1.07 cm, what is the magnification of the image? A) 141. B) -14.1. C) 0.00708. D) -7.08. Show Answer Correct Answer: A) 141. 3. EM waves have the same speed but different: A) Frequency & medium. B) Wavelength & frequency. C) Medium & wavelength. D) Color & medium. Show Answer Correct Answer: B) Wavelength & frequency. 4. What does AC mean in electrical terms? A) Acceleration Ceremony. B) Adaption cecum. C) Alternating Current. D) Amplect Ceremony. Show Answer Correct Answer: C) Alternating Current. 5. What is the earth's primary source of light energy? A) Moon. B) Sun. C) Waves. D) Fire. Show Answer Correct Answer: B) Sun. 6. A useful method of expressing very small or very large number is ..... A) Arabic numerals. B) Greek letters. C) Significant figures. D) Scientific notation. Show Answer Correct Answer: D) Scientific notation. 7. If 150 Joules of work is needed to move a box 10 meters, what force was used? A) 1500 N. B) 15 N. C) 1.5 N. D) 150 N. Show Answer Correct Answer: B) 15 N. 8. How many significant figures does the following number have:0.002040 A) 6. B) 4. C) 3. D) 2. Show Answer Correct Answer: B) 4. 9. Magenta light is really a mixture of A) Red and yellow light. B) Red and cyan light. C) Yellow and green light. D) Red and blue light. Show Answer Correct Answer: D) Red and blue light. 10. The unit Joules is for ..... A) Heat energy. B) Temperature. C) Specific heat. D) None of above. Show Answer Correct Answer: A) Heat energy. 11. Saqib uses a wheelbarrow to move soil into his garden. He exerts an average force of 165 N while pushing the wheelbarrow and does 6.4 J of work during each load. How far is he moving the soil during each load? A) 39 m. B) 26 m. C) 0.039 m. D) 0.026 m. Show Answer Correct Answer: C) 0.039 m. 12. Changes of state are different to chemical changes because ..... A) Changes of state can be reversed to recover the original properties of the material. B) Changes of state result in the creation of new substances. C) Changes of state cannot happen to gases. D) None of above. Show Answer Correct Answer: A) Changes of state can be reversed to recover the original properties of the material. 13. What is .00000005 A in SI Prefix form A) 50nA. B) 5.0 x 10-7 A. C) 5.0 X 10-9 A. D) 5.0 x 10-8. Show Answer Correct Answer: A) 50nA. 14. Formula for potential energy A) U = m*g*y. B) U = $ \frac{1}{2} m*v^2$. C) U = F*d. D) U = W/t. Show Answer Correct Answer: A) U = m*g*y. 15. The emission spectra is produced when A) Electrons release energy as they move to their excited state. B) Electrons absorb energy as they move to their excited state. C) Electrons release energy as they return to the ground state. D) Electrons absorb energy as they return to the ground state. Show Answer Correct Answer: C) Electrons release energy as they return to the ground state. 16. Which model of the atom said that electrons are allowed to have only certain energies? A) Bohr model. B) Quantum mechanical model. C) Not true of either model. D) Both Bohr and Quantum mechanical model. Show Answer Correct Answer: D) Both Bohr and Quantum mechanical model. 17. A particular light bulb is 23% efficient. If 200 kJ of energy is put into the light bulb, the amount of energy the light is producing is A) 200 KJ. B) 46 KJ. C) 870 KJ. D) 4600 KJ. Show Answer Correct Answer: B) 46 KJ. 18. Calculate the charge flowing through a wire in 5 seconds if the current is 3 Amps A) 15. B) 15C. C) 8C. D) 80C. Show Answer Correct Answer: B) 15C. 19. Equation for acceleration A) Change in velocity / time taken. B) Change in velocity x time taken. C) Change in velocity-time taken. D) Change in velocity + time taken. Show Answer Correct Answer: A) Change in velocity / time taken. 20. The to and fro motion of a simple pendulum is an example of ..... motion. A) Rectilinear. B) Oscillatory. C) Circular. D) Curvilinear. Show Answer Correct Answer: B) Oscillatory. ← 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