This quiz works best with JavaScript enabled. Home > Science > Physics > Physics Basics > Physics – Quiz 41 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 41 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How much energy is transferred between a pizza and the oven when both are at a temperature of 80$^ \circ$C? A) 40 J. B) 0 J. C) 80 J. D) None of above. Show Answer Correct Answer: B) 0 J. 2. Which position of the object will produce a magnified virtual image, if a concave mirror of focal length 15 cm is being used? A) 10 cm. B) 20 cm. C) 30 cm. D) 35 cm. Show Answer Correct Answer: A) 10 cm. 3. A cube of ice is placed in a foam cup and it begins to melt. The air temperature is 23$^ \circ$C. Which one of the following best describes the temperature of the water that is formed? A) Less than 0$^ \circ$C. B) 0$^ \circ$C. C) Room temperature. D) Greater than 0$^ \circ$C but less than room temperature. Show Answer Correct Answer: B) 0$^ \circ$C. 4. Speed, energy and momentum are A) Base quantity. B) Derived quantity. C) Scalar quantity. D) Vector quantity. Show Answer Correct Answer: B) Derived quantity. 5. Albert Einstein did a lot of physics work in the physics area called ..... ..... A) Static Mechanics. B) Gas Law. C) Relativistic mechanics. D) None of above. Show Answer Correct Answer: C) Relativistic mechanics. 6. Fred kicks a ball with a force of 20N to George, who is 5M away. How much work was done to the ball? A) 25J. B) 100J. C) 4J. D) 75J. Show Answer Correct Answer: B) 100J. 7. A concave mirror produces a magnification of +4. The object is placed: A) At the focus. B) Between focus and centre of curvature. C) Between focus and pole. D) Beyond the centre of curvature. Show Answer Correct Answer: C) Between focus and pole. 8. How does population Density effect the environment? A) Smog. B) To many people in one space can overwhelm the ecosystem and enviroment. C) People pollute. D) Pancakes. Show Answer Correct Answer: B) To many people in one space can overwhelm the ecosystem and enviroment. 9. A truck driving at 60 miles per hour travels 150 miles. How long is it driving for? A) 9000 hours. B) 0.4 hours. C) 210 hours. D) 2.5 hours. Show Answer Correct Answer: D) 2.5 hours. 10. Seconds is the unit of which physics concept? A) Acceleration. B) Velocity. C) Time. D) Distance. Show Answer Correct Answer: C) Time. 11. On position time graph, with position on the y-axis and time on the x-axis, a change in direction is represented by: A) A line that is initially moving upwards, then turns downward. B) A constantly rising line. C) A flat, horizontal line. D) A point at the intersection of the x and y axis. E) A line that curves sharply. Show Answer Correct Answer: B) A constantly rising line. 12. When one object, vibrating at the same natural frequency of a second object, forces that second object into vibration motion, it is called A) Harmonics. B) Frequency. C) Amplitude. D) Resonance. Show Answer Correct Answer: D) Resonance. 13. An automobile engine uses gasoline and in the process of burning the gasoline, a lot of "waste" heat is generated by the engine, this can be explained by A) Kinetic energy. B) Potential energy. C) First law of thermodynamics. D) Second law of thermodynamics. Show Answer Correct Answer: D) Second law of thermodynamics. 14. With correctly calibrated tools, taking repeated measurements will likely increase the ..... A) Accuracy. B) Precision. C) Uncertainty. D) Percent error. Show Answer Correct Answer: A) Accuracy. 15. A car accelerates from rest to 10m/s and takes 4 seconds to do so. The distance travelled is: A) 40m. B) 20m. C) 20 m/s. D) 2.5m. Show Answer Correct Answer: B) 20m. 16. It took 3.5 hours for a train to travel the distance between two cities at a velocity of 120 miles/hr. How many miles lie between the two cities? A) 34 miles. B) 420 miles. C) 120 miles. D) 360 miles. Show Answer Correct Answer: B) 420 miles. 17. The Law of Conservation of Momentum states: A) The total momentum before a collision is equal to the total momentum after a collision. B) The total momentum before a collision is greater than the total momentum after a collision. C) The total momentum before a collision is less than the total momentum after a collision. D) The total momentum before a collision is not related to the total momentum after a collision. Show Answer Correct Answer: A) The total momentum before a collision is equal to the total momentum after a collision. 18. What is the gain in gravitational potential energy of a body of weight 2000N as it rises from a height of 20 m to a height of 25m above the earth's surface? A) 400 J. B) 1000 J. C) 10 000 J. D) 20 000 J. Show Answer Correct Answer: C) 10 000 J. 19. SI unit for time A) Seconds. B) Minutes. C) Hours. D) Days. Show Answer Correct Answer: A) Seconds. 20. The frequency of the note Middle D is 293Hz. What length of closed pipe (to the nearest cm / at room temperature) will play the fundamental? A) 3cm. B) 13cm. C) 23cm. D) 43cm. Show Answer Correct Answer: C) 23cm. ← 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