This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Physics > Physics – Quiz 8 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 8 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. An ice cube is floating on the surface of water: How will the water level be affected by melting of this ice cube? A) Water level will first rise up then it will go down. B) Water level will be raised. C) Water level will remain the same. D) Water level will go down. Show Answer Correct Answer: C) Water level will remain the same. 2. Physics is a branch of science that deals with A) Living animals. B) Laws of nature. C) Plants. D) All the Above. Show Answer Correct Answer: B) Laws of nature. 3. When the object goes back to its starting position the distance would be A) Double. B) Zero. C) The same. D) Triple. Show Answer Correct Answer: A) Double. 4. How do we know how far did the object travel? A) By measuring its speed of an object. B) By measuring its acceleration. C) By measuring its distance and displacement. D) By measuring how long does the object travel. Show Answer Correct Answer: C) By measuring its distance and displacement. 5. UNIT OF AMOUNT OF SUBSTANCE A) MOLE. B) KG. C) SEC. D) LUX. Show Answer Correct Answer: A) MOLE. 6. What makes an object go in a circle? A) Inertia. B) Momentum. C) Centripetal acceleration. D) Centripetal force. Show Answer Correct Answer: D) Centripetal force. 7. Which law states that when one object exerts a force on a second object, the second object exerts a force on the first object? A) First. B) Third. C) Fourth. D) Second. Show Answer Correct Answer: B) Third. 8. What happens to the force between two charged objects if you reduce the distance between two objects from 30 cm to 10 cm? A) 3X. B) 20X. C) 9X. D) 1/3X. Show Answer Correct Answer: C) 9X. 9. Of the following natural phenomena, tell which one known in Sanskrit as 'deer's thirst'? A) Earthshine. B) Rainbow. C) Halo. D) Mirage. Show Answer Correct Answer: D) Mirage. 10. A projectile is fired upward, so its vertical velocity will ..... A) Slow down, stop, and speed up. B) Speed up, stop, and slow down. C) Slow down, stop, and slow down. D) Speed up, stop, and speed up. Show Answer Correct Answer: A) Slow down, stop, and speed up. 11. Which of the following substances doesn't contract on heating A) Cast iron. B) Silica glass. C) Rubber. D) Iron. Show Answer Correct Answer: D) Iron. 12. Which of the following describes a car that is slowing down, moving to the left? A) Positive Acceleration, Negative Velocity. B) Negative Acceleration, Positive Velocity. C) Positive Acceleration, Positive Velocity. D) Negative Acceleration, Negative Velocity. Show Answer Correct Answer: A) Positive Acceleration, Negative Velocity. 13. Are passengers allowed to travel in the back of a ute or in an open load space? A) Yes, if the vehicle does not exceed 60km/h. B) Yes, provided they are seated. C) No. D) None of above. Show Answer Correct Answer: C) No. 14. The study of the behavior of light is called ..... A) Lightology. B) Optics. C) Lightning science. D) Physics. Show Answer Correct Answer: B) Optics. 15. One of the physical quantities which is not a derived quantity A) Velocity. B) Acceleration. C) Length. D) Force. Show Answer Correct Answer: C) Length. 16. Throwing an egg against the wall made it break because the wall applied a larger force over? . A) A large area. B) A shorter time. C) A longer time. D) The same time. Show Answer Correct Answer: B) A shorter time. 17. A 5000N block is lifted 10 m. How much work was done? A) 500 J. B) 50 J. C) 5000 J. D) 50000 J. Show Answer Correct Answer: D) 50000 J. 18. It is the closeness of the obtain value to the accepted value. A) Precision. B) Accuracy. C) Both A & B. D) Neither A nor B. Show Answer Correct Answer: B) Accuracy. 19. Identify the vector quantity from the following A) Work. B) Heat. C) Angular momentum. D) Time. Show Answer Correct Answer: C) Angular momentum. 20. The smallest particle to which an element can be reduce while still keeping the properties of that element is A) Atom. B) Molecule. C) Proton. D) Electron. Show Answer Correct Answer: A) Atom. 21. A boy lifts a box of toys that weighs 12 N. The box is lifted 0.006 m. How much work does the student do? A) 0.075. B) 0.072 J. C) 0.073 J. D) 0.074 J. Show Answer Correct Answer: B) 0.072 J. 22. How would you write 564, 000, 000 in scientific notation? A) 5.64 x 10-7. B) 5.64 x 10 6. C) 56.4 x 10 7. D) 5.64 x 10 8. Show Answer Correct Answer: D) 5.64 x 10 8. 23. What is a capacitor? A) A device for storing p.d. B) A device for storing energy. C) A device for storing capacitance. D) A device for storing charge. Show Answer Correct Answer: D) A device for storing charge. 24. People in serious car crashes experience very high g's and this raises the probability of ..... A) Seizures. B) Hallucination. C) Injury. D) Cramping in muscles3. Show Answer Correct Answer: C) Injury. 25. RADAR is used for A) Locating geostationary satellites. B) Locating submerged submarines. C) Receiving a signals in a radio receiver. D) Detecting and locating the position of objects such as aeroplanes. Show Answer Correct Answer: D) Detecting and locating the position of objects such as aeroplanes. 26. The speed of sound in the atmosphere A) Varies according to the frequency of the sound. B) Changes with a change in temperature. C) Changes with a change in pressure. D) None of above. Show Answer Correct Answer: B) Changes with a change in temperature. 27. A toy has been dropped off by a kid on the 19th floor of his family's condominium unit. The unit is 40 m high. Disregarding air resistance, how long will the toy reach the ground? A) 2.85 s. B) 2.35 s. C) 4.00 s. D) 5.00 s. Show Answer Correct Answer: A) 2.85 s. 28. A hacky sack is thrown up into the air with an initial velocity 3 m/s. What maximum height does the hacky sack reach? A) 0.15 m. B) 0.92. C) 1.8 m. D) 0.46 m. Show Answer Correct Answer: D) 0.46 m. 29. Magnetism at the centre of a bar magnet is A) Minimum or maximum. B) Maximum. C) Zero. D) Minimum. Show Answer Correct Answer: C) Zero. 30. Which law states, "the effect produced by a moving source of waves in which there is an apparent upward shift in frequency for observers towards whom the source is approaching and an apparent downward A) Doppler's Effect. B) Kirchhoff's Law. C) Stefan's Law. D) Newton's law of cooling. Show Answer Correct Answer: A) Doppler's Effect. 31. Radio telescopes are better than optical telescopes because A) They can detect faint galaxies which no optical telescope can. B) They can work even in cloudy conditions. C) They can work during the day and night. D) All of the above. Show Answer Correct Answer: D) All of the above. 32. What is the equivalent of 45 W in kilowatts? A) 4.50 kW. B) 45. 88 kW. C) 0.045 kW. D) 45 000 kW. Show Answer Correct Answer: C) 0.045 kW. 33. Find the displacement a hiker walks if he travels 9.0 km north, and then turns around and walks 3.0 km south? A) 3.0 km. B) 6.0 km. C) 0.5 km. D) 12.0 km. Show Answer Correct Answer: B) 6.0 km. 34. The pressure (in Pa) exerted by a force (F = 100 N) when applied over an area (A = 4 m2) is A) 25. B) 4. C) 100. D) 400. Show Answer Correct Answer: A) 25. 35. The statement which correctly represents Ohm's law A) V = R/I. B) R = VI. C) V = IR. D) I = R/V. Show Answer Correct Answer: C) V = IR. 36. Which quantity is measured in newtons? A) Density. B) Weight. C) Pressure. D) Energy. Show Answer Correct Answer: B) Weight. 37. Two or more elements chemically joined together and are represented by a chemical formula are known as ..... A) Elements. B) Mixtures. C) Compounds. D) None of above. Show Answer Correct Answer: C) Compounds. 38. Identify the following quantities as scalar or vector:the mass of an object, the number of leaves on a tree and wind velocity. A) Scalar, scalar, vector. B) Scalar, vector, vector. C) Vector, scalar, vector. D) Vector, scalar, scalar. Show Answer Correct Answer: B) Scalar, vector, vector. 39. What is wavelength? A) Total amount of time it takes a wave to move through one cycle. B) Distance between a point on a wave and the EXACT same point on the next wave. C) Number of crests and troughs a wave produces in one minute. D) Length of a series of waves traveling from a source. Show Answer Correct Answer: B) Distance between a point on a wave and the EXACT same point on the next wave. 40. What is the equation for frequency? A) F = t/n. B) F = 1/T. C) F = 2 T. D) None of above. Show Answer Correct Answer: B) F = 1/T. 41. When did we first detect gravitational waves? A) 1905. B) 2016. C) 1972. D) 1916. Show Answer Correct Answer: B) 2016. 42. Accelerations can be Positive or negative. This positive and negative represents the ..... A) Direction of the force acting on the object. B) Direction of the motion. C) Frame of reference. D) None of above. Show Answer Correct Answer: A) Direction of the force acting on the object. 43. Which of the following unit will be used for the large distance? A) Miles. B) Kilometer. C) Centimeter. D) Meter. Show Answer Correct Answer: B) Kilometer. 44. In a standing wave the distance between a node and adjacent antinode is..... A) 3$\lambda$ / 4. B) 3$\lambda$ / 2. C) $\lambda$ / 2. D) $\lambda$ / 4. Show Answer Correct Answer: D) $\lambda$ / 4. 45. A difference between Newton's law of gravity and Coulomb's law is that only one of these ..... A) Involves repulsive as well as attractive forces. B) Is a fundamental physical law. C) Uses a proportionality constant. D) Invokes the inverse-square law. Show Answer Correct Answer: A) Involves repulsive as well as attractive forces. 46. A spring, which obeys Hooke's law, has an unstretched length of 10 cm. A load of 20N is suspended from the spring. The new length of the spring is 36 cm. What is the spring constant k of the spring? A) 0.56 N/ cm. B) 1.3 N/ cm. C) 0.77 N/ cm. D) 1.8 N/ cm. Show Answer Correct Answer: C) 0.77 N/ cm. 47. According to Einstein, why do objects accelerate around massive bodies? A) A force is pulling them. B) Space is pushing them. C) They don't. D) None of above. Show Answer Correct Answer: B) Space is pushing them. 48. The form of matter are..... A) 2. B) 1. C) 3. D) 4. Show Answer Correct Answer: C) 3. 49. What is torque measured in? A) Nmm. B) Nm. C) Ns. D) Ncm. Show Answer Correct Answer: B) Nm. 50. Moment of inertia is A) Scalar. B) Vector. C) Phasor. D) Tensor. Show Answer Correct Answer: D) Tensor. 51. Hot Liquids flow faster than cold liquids because of A) Viscosity. B) Piscosity. C) Adativity. D) Surface tension. Show Answer Correct Answer: A) Viscosity. 52. Combinations of two or more pulleys working together reduce the force needed to lift a load A) Pulley system. B) Load. C) Inclined plane. D) Spring scale. Show Answer Correct Answer: A) Pulley system. 53. Newton explained the relationship between crash forces and inertia in his ..... Law of Motion. A) Forst. B) Second. C) Third. D) None of above. Show Answer Correct Answer: A) Forst. 54. Which aspect of a black hole is NOT infinite? A) Density. B) Gravity. C) Mass. D) Smallness of singularity. Show Answer Correct Answer: C) Mass. 55. Someone safely orbiting a black hole is watching you fall into a black hole, what do they see? A) Gravitational collapse. B) Spaghettification. C) Length Contraction. D) Time Dilation. Show Answer Correct Answer: D) Time Dilation. 56. It is a law that applies only if the incident light passing through the analyzer is nearly polarized. A) Law of Reflection. B) Snell's Law. C) Malus's Law. D) Refraction Law. Show Answer Correct Answer: C) Malus's Law. 57. UNIT OF TEMPERATURE A) METER. B) KELVIN. C) SEC. D) KG. Show Answer Correct Answer: B) KELVIN. 58. In order to be ..... forces, their effects must cancel each other out and not cause a change in an object's motion. A) Strong. B) Normal. C) Balanced. D) Weak. Show Answer Correct Answer: C) Balanced. 59. A 2-C charge and 4-C charge attract each other with 10 N of force. How much will a 2-C charge and 8-C charge attract each other when placed the same distance apart? A) 20 N. B) 5 N. C) 12 N. D) 10 N. Show Answer Correct Answer: A) 20 N. 60. On a graph showing distance versus time, a horizontal line represents an object that is A) Moving at constant speed. B) Not moving. C) Decreasing its speed. D) Increasing its speed. Show Answer Correct Answer: B) Not moving. ← PreviousNext →Related QuizzesScience QuizzesGeneral Knowledge QuizzesPhysics Quiz 1Physics Quiz 2Physics Quiz 3Physics Quiz 4Physics Quiz 5Physics Quiz 6Physics Quiz 7Physics Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books