This quiz works best with JavaScript enabled. Home > Science > Physics > Physics – Quiz 28 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 28 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Supersonic plane fly with the speed A) Of light. B) Of sound. C) Less than the speed of sound. D) Greater than the speed of sound. Show Answer Correct Answer: D) Greater than the speed of sound. 2. It states that the angle of incidence is equal to the angle of reflection. A) Law of Reflection. B) Law of Refraction. C) Snell's Law. D) Malus' Law. Show Answer Correct Answer: A) Law of Reflection. 3. A golf ball starts with a speed of 2 m/s and slows at a constant rate of 0.5 m/s2, what is its velocity after 2 s? A) 0 m/s. B) 0.5 m/s. C) 1 m/s. D) 3 m/s. Show Answer Correct Answer: C) 1 m/s. 4. The basic function of an electromotive force in a circuit is to do which of the following? A) Convert electrical energy into some other form. B) Convert some other form of energy into electrical. C) None of the above choices are valid. D) None of above. Show Answer Correct Answer: B) Convert some other form of energy into electrical. 5. What is the perimeter of a rectangular room that has a length of 5.1 m and a width that is 2 m less than the length? A) 14.2 m. B) 16.4 m. C) 20.4 m. D) 24.4 m. Show Answer Correct Answer: A) 14.2 m. 6. Which of the following pairs has the same dimensions? A) Specific Heat and Latent Heat. B) Impulse and Momentum. C) Surface Tension and Force. D) Moment of Inertia and Torque. Show Answer Correct Answer: B) Impulse and Momentum. 7. Covert 300C to 0F A) -1.11. B) 86. C) 271.89. D) 359. Show Answer Correct Answer: B) 86. 8. What is the maximum height reached by a ball thrown into the air with initial velocity of 18 m/s at an angle of 25 degree? A) 1.08 m. B) 2.55 m. C) 4.13 m. D) 37.27 m. Show Answer Correct Answer: C) 4.13 m. 9. Which theory explains the geometric description of gravity as a curvature of spacetime around massive bodies? A) Theory of Special Relativity. B) Law of Universal Gravitation. C) Theory of General Relativity. D) Photoelectric Theory. Show Answer Correct Answer: C) Theory of General Relativity. 10. Which of the following is a vector quantity? A) 15 lightyears. B) 24 km. C) 12 kg. D) 20 m West. Show Answer Correct Answer: D) 20 m West. 11. The pressure of a fluid depends on all of the following, except A) Depth $ \Delta h$. B) Density $ \rho$. C) Temperature (T). D) Gravitational acceleration(g). Show Answer Correct Answer: C) Temperature (T). 12. One meter is ..... cm. A) 10cm. B) 100cm. C) 0.10cm. D) 0.010cm. Show Answer Correct Answer: B) 100cm. 13. A ray of light traveling from air into crown glass strikes the surface at an angle of 30 degrees. What is the angle of refraction? (air n=1, crown glass n=1.532) A) 39.7 degrees. B) 19.2 degrees. C) 59.1 degrees. D) 12.3 degrees. Show Answer Correct Answer: B) 19.2 degrees. 14. It is the amount of heat needed to raise the temperature of 1 kg of a substance by 1 $^ \circ$C. A) Molar heat capacity. B) Specific heat. C) Thermal conductivity. D) Heat of fusion. Show Answer Correct Answer: B) Specific heat. 15. A 5 C and 8 C charge give off a force of 2.5 x 109 N. What is the distance between them? A) 11 m. B) 12 m. C) 121 m. D) 144 m. Show Answer Correct Answer: B) 12 m. 16. What is the unit for frequency? A) Hertz, Hz. B) Metre, m. C) Metre per second, m/s. D) Newton, N. Show Answer Correct Answer: A) Hertz, Hz. 17. You apply a force of? to a wheelbarrow and moved it 6 m resulting in 48 J of work. How much force did you do on the dresser? A) 8 N. B) 8 J. C) 288 J. D) 288 N. Show Answer Correct Answer: A) 8 N. 18. Which of the following is the most likely to be the mass of a stellar-mass black hole? A) 25 solar masses. B) 100, 000, 000 solar masses. C) 1 solar mass. D) .1 solar masses. Show Answer Correct Answer: A) 25 solar masses. 19. What is the independent variable in an experiment? A) The thing we change or test. B) The normal situation. C) What we measure in the end. D) The thing we keep the same. Show Answer Correct Answer: A) The thing we change or test. 20. When a car is running along a rough road, what force really is causing it to run forward? A) Force of the engine. B) Force of the tires on the road. C) Force of the road on the tires. D) Force of wind on the car. Show Answer Correct Answer: C) Force of the road on the tires. ← 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