This quiz works best with JavaScript enabled. Home > Science > Physics > Physics – Quiz 45 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 45 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the correct expression of the law of Ohm? A) V = R/I. B) R = V*I. C) I = V/R. D) R = V*I. Show Answer Correct Answer: C) I = V/R. 2. It is energy in an object that is held in a vertical position, due to the force of gravity working to pull it down A) Kinetic energy. B) Gravitational Potential Energy. C) Potential Energy. D) Mechanical Energy. Show Answer Correct Answer: B) Gravitational Potential Energy. 3. What is the product of the net force and the time interval over which it acts? A) Work. B) Momentum. C) Impulse. D) Energy. Show Answer Correct Answer: C) Impulse. 4. What kind of wave is a light wave? A) Pressure waves. B) Longitudinal wave. C) Sound waves. D) Transverse. Show Answer Correct Answer: D) Transverse. 5. A boy throws a small stone into a pond. Waves spread out from where the stone hits the water and travel to the side of the pond. The boy notices that eight waves reach the side of the pond in a time of 5.0s. What is the frequency of the waves? A) 0.20 Hz. B) 0.63 Hz. C) 1.6 Hz. D) 40 Hz. Show Answer Correct Answer: C) 1.6 Hz. 6. A tunnel has a length of 50 km. A car takes 20 min to travel between the two ends of the tunnel. What is the average speed of the car? A) 2.5 km / h. B) 16.6 km / h. C) 150 km / h. D) 1000 km / h. Show Answer Correct Answer: C) 150 km / h. 7. For a capacitor to hold a charge, there must be an interruption of a circuit between its two sides. Which of thefollowing is NOT an example of this interruption A) Vacuum. B) Insulator. C) Dielectric. D) Conductor. Show Answer Correct Answer: D) Conductor. 8. From the various combinations of ..... derived units are obtained. A) 2. B) Electrical current. C) Fundamental units. D) Metric prefixes. Show Answer Correct Answer: C) Fundamental units. 9. Tessie measures her bathroom tiles to be 10 inches by 8 inches. What are the length and width in cm? A) 20.32 cm by 19.6 cm. B) 25.4 cm by 20.32 cm. C) 25.4 cm to 24.5 cm. D) 35.4 cm by 12.32 cm. Show Answer Correct Answer: B) 25.4 cm by 20.32 cm. 10. Energy posses by a body in motion is called A) Potential Energy. B) Kinetic Energy. C) Both of Above. D) None of Above. Show Answer Correct Answer: B) Kinetic Energy. 11. If R1 < R2 < R3, and if these resistors are connected in parallel in a circuit, which one has the highest current? A) R1. B) See. C) Rz. D) All have the same current. Show Answer Correct Answer: A) R1. 12. What is the product of the mass and the velocity of the object? A) Impulse. B) Momentum. C) Work. D) Power. Show Answer Correct Answer: B) Momentum. 13. Find the x-and y-components to a vector that is 89.5 mm at 305$^ \circ$ in standard position. A) -73.3 mm, 51.3 mm. B) 73.3 mm, 51.3 mm. C) -51.3 mm, 73.3 mm. D) 51.3 mm, -73.3 mm. Show Answer Correct Answer: A) -73.3 mm, 51.3 mm. 14. Why are gaps left between the rails of the railway track A) To pass air. B) To allow thermal expansion. C) To allow thermal conductivity. D) None of above. Show Answer Correct Answer: B) To allow thermal expansion. 15. The derived unit of (kg2 m2) / (kg m s2) is equivalent to A) Kg m/s2. B) Kg2/s2. C) Kg m/s. D) Kg3 m3 / s2. Show Answer Correct Answer: A) Kg m/s2. 16. What does the gradient in a distance-time graph give you? A) Numbers. B) Distance value. C) Speed value. D) Acceleration value. Show Answer Correct Answer: C) Speed value. 17. Planets are A) Non-luminous heavenly bodies. B) Luminous heavenly bodies that twinkle. C) Luminous heavenly bodies that do not twinkle. D) Luminous heavenly bodies revolving around a star. Show Answer Correct Answer: A) Non-luminous heavenly bodies. 18. Of the following quantities, the one that is not a scalar in character is ..... A) Charge. B) Electric field. C) Energy. D) Electric potential. Show Answer Correct Answer: B) Electric field. 19. Which of the following is true about a rock moving in outer space? A) It has a constant ACCELERATION. B) It has constant VELOCITY. C) It is moving horizontally. D) It is moving vertically. Show Answer Correct Answer: B) It has constant VELOCITY. 20. It constitutes units based on power of 10 which makes it preferred system to be used in science A) Measurement. B) Metric system. C) Basic units. D) Unit prefixes. Show Answer Correct Answer: B) Metric system. ← 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