This quiz works best with JavaScript enabled. Home > Science > Physics > Physics Basics > Physics – Quiz 21 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 21 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The unit of weight is the A) Gram. B) Kilogram. C) Pound. D) Newton. Show Answer Correct Answer: D) Newton. 2. A projectile is launched from the ground at an angle of 30o. At what point in its trajectory does this projectile have the least speed? A) Just after it is launched. B) At the highest point in its flight. C) Just before it hits the ground. D) Halfway between the ground and the highest point. E) Speed is always constant. Show Answer Correct Answer: B) At the highest point in its flight. 3. What does The law of reflection state? A) The angle the incident ray makes with a line drawn perpendicular to the surface of the mirror. B) Shows how rays change direction when they strike mirrors and pass through lenses. C) The angle of reflection is equal to the angle of incidence. D) None of above. Show Answer Correct Answer: C) The angle of reflection is equal to the angle of incidence. 4. An increase in temperature that causes a change in the volume of a substance A) Thermal fusion. B) Thermal vaporization. C) Thermal equilibrium. D) Thermal expansion. Show Answer Correct Answer: D) Thermal expansion. 5. When an object drops, what happens to the energy? A) Potential energy stays the same. B) Potential energy increases. C) Kinetic energy increases. D) Kinetic energy stays the same. Show Answer Correct Answer: C) Kinetic energy increases. 6. The tendency of an object to resist a change in motion A) Speed. B) Velocity. C) Position. D) Inertia. Show Answer Correct Answer: D) Inertia. 7. Energy that must be gained or lost for evaporation or condensation to occur A) Thermal fusion. B) Thermal vaporization. C) Thermal equilibrium. D) Thermal expansion. Show Answer Correct Answer: B) Thermal vaporization. 8. THE PROPERTY OF PERSISTENCE OF VISION IS USED IN A) SHORT SIGHTEDNESS. B) LONG SIGHTEDNESS. C) CINEMATOGRAPHY. D) COLOUR VISION. Show Answer Correct Answer: C) CINEMATOGRAPHY. 9. Which is an example of kinetic energy? A) A soccer ball is lying on the ground. B) A person is standing in line. C) A roller coaster is sitting at the top of a hill. D) Water is flowing over a dam. Show Answer Correct Answer: D) Water is flowing over a dam. 10. Water is a suitable cooling agent used in the cooling system of a car engine. This is because water A) Evaporates rapidly. B) Is rust-resistant. C) Has a high density. D) Can absorb a lot of heat. Show Answer Correct Answer: D) Can absorb a lot of heat. 11. Which force is responsible for the decay of a proton to a neutron. State the boson. A) Weak. Z0. B) Weak, W+. C) Strong, g. D) Weak, W-. Show Answer Correct Answer: B) Weak, W+. 12. Motion is of various types and the type of motion depends on how an object moves. For example, which type of motion can A) Parabolic motion. B) Linear motion. C) Oscillatory motion. D) Circular motion. Show Answer Correct Answer: B) Linear motion. 13. Velocity is both ..... and ..... A) Speed, direction. B) Direction, mass. C) Volume, density. D) Direction, magnitude. Show Answer Correct Answer: A) Speed, direction. 14. The gradient of a velocity time graph represents A) Distance travelled. B) Acceleration. C) Displacement. D) Force. Show Answer Correct Answer: B) Acceleration. 15. The density of aluminum is 2.7 $gcm^3$. What is the mass of a cube of aluminium of sides 2.0 cm? A) 1.35 g. B) 5.4 g. C) 10.8 g. D) 21.6 g. Show Answer Correct Answer: D) 21.6 g. 16. Boiling temperature point? A) 12. B) 35. C) 100. D) -90. Show Answer Correct Answer: C) 100. 17. What is Heat? (in physics) A) A miami basketball team. B) The flow of thermal energy. C) Elements at high temperature. D) Plasma radiation. Show Answer Correct Answer: B) The flow of thermal energy. 18. What scale do we use to measure temperature? A) Thermometer. B) Only Celsius. C) $^ \circ$C $^ \circ$F K. D) Only Fahrenheit. Show Answer Correct Answer: C) $^ \circ$C $^ \circ$F K. 19. If someone is running-6m/s what is their speed? A) -6m/s. B) 3m/s. C) 6m/s. D) -3m/s. Show Answer Correct Answer: C) 6m/s. 20. Which force is responsible for the production of strange particles? A) Strong. B) Weak. C) Electromagnetic. D) Gravitational. Show Answer Correct Answer: A) Strong. ← 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