This quiz works best with JavaScript enabled. Home > Science > Physics > Physics Basics > Physics – Quiz 48 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 48 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. It is a branch of Physics that studies structures, properties, and behavior of atom. A) Atomic Physics. B) Electromagnetism. C) Thermodynamics. D) Quantum Mechanics. E) Relativity. Show Answer Correct Answer: A) Atomic Physics. 2. An excited state of an atom has an energy level of 2.5 eV. The ground state of this atom is at 1.1 eV. Which is the maximum energy of a photon emitted then an electron moves from the excited state to the ground state? A) 1.1 eV. B) 1.4 eV. C) 2.5 eV. D) 3.6 eV. Show Answer Correct Answer: B) 1.4 eV. 3. Units of acceleration (a) A) M/s. B) Kg. C) M/s2. D) N. Show Answer Correct Answer: C) M/s2. 4. A graph of two variables that are directly proportional can be fully described as.. A) A straight line. B) Linear. C) Has a negative gradient. D) A straight line through the origin. Show Answer Correct Answer: D) A straight line through the origin. 5. What is the name of a system in which there is no net change in the total energy? A) A closed system. B) An open system. C) A mechanical system. D) None of above. Show Answer Correct Answer: A) A closed system. 6. Electrical charge is calculated using ..... A) Potential difference x time. B) Current / time. C) Potential difference / time. D) Current x time. Show Answer Correct Answer: D) Current x time. 7. A lead fishing sinker with a mass of 75.0 g and a temperature of 25$^ \circ$C is placed on a block of ice at 0$^ \circ$C, which then melts. If 75.0 g of water at the same temperature were poured on the ice, which of the following is true? A) The water would melt more ice than the lead fishing sinker. B) The water would melt less ice than the lead fishing sinker. C) The water would melt the same amount of ice as the lead fishing sinker. D) Neither the water nor lead fishing sinker would melt any ice. Show Answer Correct Answer: B) The water would melt less ice than the lead fishing sinker. 8. The symbol for specific heat is ..... A) C. B) Q. C) M. D) T. Show Answer Correct Answer: A) C. 9. Which of the following requires the most power (assuming all are lifted to the same height)? A) Lifting Berto in 5 seconds. B) Lifting Ms. Fio in 10 seconds. C) Lifting Berto in 1 second. D) Lifting Ms. Fio in 1 second. Show Answer Correct Answer: C) Lifting Berto in 1 second. 10. SI unit for mass A) Kilograms. B) Grams. C) Pounds. D) Ounces. Show Answer Correct Answer: A) Kilograms. 11. Focal length of plane mirror is A) At infinity. B) Zero. C) Negative. D) None of these. Show Answer Correct Answer: A) At infinity. 12. A 3, 000 kg truck moving at 10 m/s to the right hits a 1, 000 kg parked car (zero initial speed). The parked car moves off at 15 m/s, to the right. What is the velocity of the truck? A) 15 m/s, to the right. B) 5 m/s, to the left. C) 5 m/s, to the right. D) 15 m/s, to the left. Show Answer Correct Answer: C) 5 m/s, to the right. 13. Si unit for density A) Kilograms per cubic metre. B) Grams per cubic metre. C) Grams per cubic centimetre. D) Kilograms per cubic centimetre. Show Answer Correct Answer: A) Kilograms per cubic metre. 14. They are the exchange particles for the weak nuclear force: A) Mesons. B) Gluons. C) W+, W-and Z bosons. D) Photons. Show Answer Correct Answer: C) W+, W-and Z bosons. 15. Definition of power A) The amount of energy transferred when an object is moved over a distance by an external force in regards to the direction of the displacement. B) The rate of energy transferred per second. C) The amount of energy transferred in motion. D) The amount of energy an object has at rest / before motion. Show Answer Correct Answer: B) The rate of energy transferred per second. 16. Once in motion, what does an object like soccer ball have a natural tendency to do? A) It has a natural tendency to keep moving. B) It has a natural tendency to stop. C) It has a natural tendency to change direction. D) T has a natural tendency to slow down. Show Answer Correct Answer: A) It has a natural tendency to keep moving. 17. WHAT IS f IF YOU HAVE AN OBJECT 2 M FROM THE CONCAVE MIRROR AND THE IMAGE IS 4 M FROM THE MIRROR. A) 2.0 M. B) 0.67 M. C) -1.3 M. D) -4.0 M. Show Answer Correct Answer: C) -1.3 M. 18. The pressure of a gas will increase as the volume decreases provided the temperature does not change A) Boyle's law. B) Charles's law. C) Bernoulli's principle. D) Archimedes' principle. Show Answer Correct Answer: A) Boyle's law. 19. Find the angle of refraction for a ray of light that enters water (n=1.33) from glass (n=1.5) at an angle of 25 degrees to the normal. A) 22. B) 28.5. C) 57.5. D) 32.8. Show Answer Correct Answer: B) 28.5. 20. SI unit for energy A) Joules. B) Watts. C) Newtons. D) Meters. Show Answer Correct Answer: A) Joules. ← 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