This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Physics > Physics Basics > Physics – Quiz 15 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 15 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Energy transformations occur when ..... A) Energy is created through conduction. B) Two forces slide together that are touching. C) Energy changes from one form to another. D) A chemical reaction takes place. Show Answer Correct Answer: C) Energy changes from one form to another. 2. Which of the following letters will be seen without any change in a plane mirror? A) P. B) S. C) L. D) T. Show Answer Correct Answer: D) T. 3. Equation for efficiency A) (useful energy / waste energy) x 100%. B) (total energy / useful energy) x 100%. C) (waste energy / total energy) x 100%. D) (useful energy / total energy) x 100%. Show Answer Correct Answer: D) (useful energy / total energy) x 100%. 4. What area of physics deals with the subjects of heatand temperature? A) Thermodynamics. B) Mechanics. C) Quantum mechanics. D) Electrodynamics. Show Answer Correct Answer: A) Thermodynamics. 5. Select all possible answers:Common topics of physics include: A) Evolution. B) Magnetism. C) Forms of energy. D) Sound. Show Answer Correct Answer: B) Magnetism. 6. It is a branch of physics examines the structure, properties, and behavior of molecules. A) Thermodynamics. B) Classical Mechanics. C) Electromagnetism. D) Quantum Mechanics. E) Molecular Physics. Show Answer Correct Answer: E) Molecular Physics. 7. It is a branch of physics that studies about heat and other forms of energy, and of the conversion of energy from one form to another. A) Thermodynamics. B) Quantum Physics. C) Nuclear Physics. D) Optics. Show Answer Correct Answer: A) Thermodynamics. 8. The relative density of brass is 8.4.Which of the following is the best statement that can be made? A) Brass is heavier than water. B) Water is heavier than brass. C) 100 $cm^3$ of brass is heavier than 100 $cm^3$ of water. D) 100 $cm^3$ of water is heavier than 100 $cm^3$ of brass. Show Answer Correct Answer: C) 100 $cm^3$ of brass is heavier than 100 $cm^3$ of water. 9. STRENGTH OF ELECTROMAGNET CAN BE INCREASED BY INTRODUCING A SOFT IRON CORE . A) OUTSIDE THE COIL. B) INSIDE THE COIL. C) ROUND THE COIL. D) ABOVE THE COIL. Show Answer Correct Answer: B) INSIDE THE COIL. 10. What letter do we use to represent change in temperature? A) Q. B) C. C) $ \Delta T$. D) M. Show Answer Correct Answer: C) $ \Delta T$. 11. A thermistor is a device that: A) Has a resistance that changes due to the amount of light acting upon it. B) Always has a fixed resistance. C) Has a resistance that changes due to the amount of thermal energy acting upon it. D) Has a resistance in one direction only. Show Answer Correct Answer: C) Has a resistance that changes due to the amount of thermal energy acting upon it. 12. A car accelerates from rest down a highway at 6 m/s2 for 5 seconds. What distance did the car travel during acceleration? The bolded term describes what physics concept? A) Time. B) Acceleration. C) Distance. D) Initial velocity. E) Final velocity. Show Answer Correct Answer: B) Acceleration. 13. An aeroplane is travelling at a constant speed at an altitude of 1000 m above sea level. Which of the following is TRUE? A) Its Kinetic energy is increasing. B) It has kinetic energy only. C) It has potential energy only. D) It has both kinetic and potential energy. Show Answer Correct Answer: D) It has both kinetic and potential energy. 14. Energy transferred = A) Voltage. B) Work undone. C) Work done. D) Current. Show Answer Correct Answer: C) Work done. 15. If I have 2 blocks of Aluminium (one of 1kg and one of 10 kg) and heat them up with 6, 000 Joules of energy.Which one will have the SMALLEST change in temperature? A) 1 kg. B) 10 kg. C) They both heat up to the same temperature. D) It depends on the temperature of the room. Show Answer Correct Answer: B) 10 kg. 16. Light behaves like both a particle and a ..... A) Mass. B) Wave. C) Current. D) None of above. Show Answer Correct Answer: B) Wave. 17. A column of mercury (density = 13, 600 kg/m3) has a height of 74 cm. Using pressure = d x g x h and SI units (d is density), calculate the pressure at the bottom of the column. A) 100, 640 N. B) 640, 100 N. C) 100, 640 Pa. D) 600, 100 Pa. Show Answer Correct Answer: C) 100, 640 Pa. 18. Water molecules have the greatest kinetic energy in A) Water at 90 $^ \circ$C. B) Ice at 0 $^ \circ$C. C) Water at 373 K. D) Steam at 150 $^ \circ$C. Show Answer Correct Answer: D) Steam at 150 $^ \circ$C. 19. What is the standard abbreviation for seconds? A) T. B) S. C) Sds. D) Sec. Show Answer Correct Answer: B) S. 20. The emission of electrons from the surface of a heated metal is called A) Thermionic emission. B) Cathode emission. C) Vaporization. D) Condensation. Show Answer Correct Answer: A) Thermionic emission. 21. SI unit of measurments length A) Second. B) Kilometer. C) Kilogran. D) Meter. Show Answer Correct Answer: D) Meter. 22. Vf is the symbol for which physics concept? A) Final velocity. B) Time. C) Acceleration. D) Distance. E) Initial Velocity. Show Answer Correct Answer: A) Final velocity. 23. Constant Speed is ..... A) The speed of an object calculated by taking the total distance and how long it took that object to move that distance. B) When an object moves at the same speed for an extended period of time. C) The speed and direct an object is moving. D) None of above. Show Answer Correct Answer: B) When an object moves at the same speed for an extended period of time. 24. Calculate the energy absorbed by 30 g of 100 $^ \circ$C water that is turned into 100 $^ \circ$C . A) 67.8 J. B) 678 J. C) 67 800 J. D) 6 7800 J. Show Answer Correct Answer: C) 67 800 J. 25. Divide:(6.9 x 107) / (2.3 x 10-3) A) 3 x 1010. B) 3 x 10-4. C) 3 x 104. D) 3 x 10-11. Show Answer Correct Answer: A) 3 x 1010. 26. The length of the mercury column in a non-calibrated mercury-in-glass thermometer is 20 cm when its bulb is immersed in boiling water. What would the temperature be if the length of the mercury column is 14 cm? A) $ 14^\circ C$. B) $ 20^\circ C$. C) $ 30^\circ C$. D) $ 70^\circ C$. Show Answer Correct Answer: D) $ 70^\circ C$. 27. SI unit of Measurements mass? A) Second. B) Gram. C) Kilogram. D) Meter. Show Answer Correct Answer: C) Kilogram. 28. The units of spring constant are ..... A) Nm. B) N/m. C) Nm2. D) N/m2. Show Answer Correct Answer: B) N/m. 29. Si unit for weight A) Neutons. B) Gramms. C) Kilogramms. D) Newtons. Show Answer Correct Answer: D) Newtons. 30. A change in state of matter A) Latent heat. B) Specific heat capacity. C) Phase change. D) None of above. Show Answer Correct Answer: C) Phase change. 31. Motion occurs when ..... A) The speed of an object changes. B) An object's distance from another object changes. C) There is an increase or decrease in an object's speed. D) None of above. Show Answer Correct Answer: B) An object's distance from another object changes. 32. A 70.0 kg runner is travelling at 5.05 m/s. What is their kinetic energy? A) 177J. B) 892 KJ. C) 892 J. D) 3.47x103 J. Show Answer Correct Answer: C) 892 J. 33. After grounding, how will objects interact? A) Both will have the same charge, so they attract one another. B) Both will be neutral, so they will attract one another. C) Botn will be neutral, so they will repel one another. D) Both will be neutral, so they will not attract nor repel. Show Answer Correct Answer: D) Both will be neutral, so they will not attract nor repel. 34. If I heat up 2 pans of water one has 100 mL in it and one has 1000mL. Which one heats up the fastest? A) 100 mL. B) 1000 mL. C) They both heat up at the same speed. D) They cool down. Show Answer Correct Answer: A) 100 mL. 35. Decreasing speed A) Distance. B) Velocity. C) Acceleration. D) None of above. Show Answer Correct Answer: C) Acceleration. 36. Which of the following systems transforms chemical energy to light energy? A) Fan. B) Lamp. C) Compass. D) Burning a candle. Show Answer Correct Answer: D) Burning a candle. 37. Area of physics that deals with the bahavior of objects and systems in response to various forces. A) Acoustics. B) Mechanics. C) Thermodynamics. D) Optics. Show Answer Correct Answer: B) Mechanics. 38. What makes a compass work? A) Magnetism. B) Friction. C) Gravity. D) Batteries. Show Answer Correct Answer: A) Magnetism. 39. The force required to move a chair 4 meters is 3 newtons how much work is done A) 12 J. B) 10 N. C) 10 J. D) 12 N. Show Answer Correct Answer: A) 12 J. 40. The rate at which an object's velocity changes A) F= MA. B) Inertia. C) Speed. D) Acceleration. Show Answer Correct Answer: D) Acceleration. 41. Speedometer is used to measure ..... of the vehicle A) Time. B) Distance. C) Density. D) Speed. Show Answer Correct Answer: D) Speed. 42. SI unit for force A) Meters. B) Newtons. C) Joules. D) Watts. Show Answer Correct Answer: B) Newtons. 43. Thermal Energy required for a change of state is given by ..... A) Mass x specific heat capacity. B) Mass x specific latent heat. C) Mass / specific heat capacity. D) Mass / specific latent heat. Show Answer Correct Answer: B) Mass x specific latent heat. 44. What is the work done when 5 N of force is applied for 20 m in 10 s? A) 10 J. B) 100 J. C) 1000 J. D) 2.5 J. Show Answer Correct Answer: B) 100 J. 45. A scientist is feeling sick and knows that if her temperature is a degree or more above 37.5$^ \circ$C she should go home from work. But all she has is a thermometer graduated in kelvin. What temperature does the thermometer need to be? A) 311.5 K. B) 325.5 K. C) 310.5 K. D) 194.5 K. Show Answer Correct Answer: A) 311.5 K. 46. In a series of reactions, two deuterons combine to form a helium nucleus. What is the name of this process? A) Nuclear fission. B) Nuclear fusion. C) Chain reaction. D) Nuclear reaction. Show Answer Correct Answer: B) Nuclear fusion. 47. What effect does tightning the string of a guitar have on the sound? A) The amplitude is increased. B) The frequency is decreased. C) The amplitude is decreased. D) The frequency is increased. Show Answer Correct Answer: D) The frequency is increased. 48. Precision describes A) Human error. B) The relationship of a measurement to an accepted standard. C) The limitations of the measuring instrument. D) The lack of instrument calibration. Show Answer Correct Answer: C) The limitations of the measuring instrument. 49. A wave has a frequency of 100Hz and a wavespeed of 200m/s. What is the wavelength of the wave? A) 1m. B) 20000m. C) 2m. D) 100m. Show Answer Correct Answer: C) 2m. 50. According to the scientific method, why does a physicist make observations and collect data? A) To decide which parts of a problem are important. B) To ask a question. C) To make an interpretation. D) To solve all problems. Show Answer Correct Answer: B) To ask a question. 51. Whether an object will sink or float in a fluid is determined by A) Charles's law. B) Archimedes' principle. C) Pascal's principle. D) Bernoulli's principle. Show Answer Correct Answer: B) Archimedes' principle. 52. Which equation will you use if you are given the values of u, v and a to find distance? A) First eq of motion. B) Insufficient data. C) Third eq Motion. D) Second eq of motion. Show Answer Correct Answer: C) Third eq Motion. 53. A box takes 40 N to start moving when the coefficient of static friction is .54. What is the weight of the box? A) 81 N. B) 18 N. C) 74 N. D) 98 N. Show Answer Correct Answer: C) 74 N. 54. What are the two types of Mechanical Energy? A) Elastic and Kinetic. B) Thermal and Potential. C) Potential and Chemical. D) Kinetic and Potential. Show Answer Correct Answer: D) Kinetic and Potential. 55. You drop a 5.00 kg ball from a height of 2.00 m. What is its velocity right before it hits the ground? A) 6.32 m/s. B) 100 m/s. C) 40.0 m/s. D) 4.47 m/s. Show Answer Correct Answer: A) 6.32 m/s. 56. What is the definition of energy? A) The distance an object moves. B) The ability to do work. C) The ability to apply a force. D) How fast an object moves. Show Answer Correct Answer: B) The ability to do work. 57. Black surfaces are: A) Neither good absorbers, nor good emitters of infra-red radiation. B) Good absorbers, but poor emitters of infra-red radiation. C) Poor absorbers, but good emitters of infra-red radiation. D) Both good absorbers and emitters of infra-red radiation. Show Answer Correct Answer: D) Both good absorbers and emitters of infra-red radiation. 58. A concave mirror gives real, inverted and same size image if the object is placed A) At C. B) Beyond C. C) At F. D) At infinity. Show Answer Correct Answer: A) At C. 59. Two vectors of magnitudes 25 and 15 are added together. The minimum magnitude of the resultant vector is ..... A) 10. B) 25. C) 15. D) 40. Show Answer Correct Answer: A) 10. 60. Definition of work A) The rate of energy transferred per second. B) The amount of energy an object has at rest / before motion. C) 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. D) The amount of energy transferred in motion. Show Answer Correct Answer: C) 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. ← 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