This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Physics > 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. In describing a person, which two physical quantities we usually used? A) Mass and Weight. B) Weight and Height. C) Wieght and Height. D) Wieght and Mass. Show Answer Correct Answer: B) Weight and Height. 2. The value of unified mass unit in kg is A) 1.67x10 to the power of 27. B) 1.67x10 to the power of-16. C) 1.67x10 to the power of 16. D) 1.67x10 to the power of-27 kg. Show Answer Correct Answer: D) 1.67x10 to the power of-27 kg. 3. What happen when the object in projectile motion reaches its maximum height? A) It begins to accelerate downward. B) It begins to accelerate parabolic. C) It begins to accelerate sideward. D) It begins to decelerate. Show Answer Correct Answer: A) It begins to accelerate downward. 4. A car has a mass of 1500 kg. A constant resultant force acts on the car and the car accelerates from 15 m / s to 20 m / s in 4.0 seconds. What is the magnitude of the resultant force acting on the car? A) 1900 N. B) 7500 N. C) 300 N. D) 1200 N. Show Answer Correct Answer: A) 1900 N. 5. It is an equation that shows equivalent amount of different units A) Dimensional analysis. B) Metric system. C) Derived units. D) Unit equality. Show Answer Correct Answer: D) Unit equality. 6. Which of the following is the longest? A) 2 m. B) 78.74 in. C) 6.56 ft. D) None of them. Show Answer Correct Answer: D) None of them. 7. If lift is going up with acceleration, the apparent weight of a body is A) Less than the true weight. B) Equal to the true weight. C) More than the true weight. D) May be more or less than true weight. Show Answer Correct Answer: C) More than the true weight. 8. When the crest of one wave passes through the trough of another wave, ..... takes place. A) Resonance. B) Constructive interference. C) Diffraction. D) Destructive interference. Show Answer Correct Answer: D) Destructive interference. 9. The state or phase of matter that has a definite volume but no definite shape is A) Gas. B) Solid. C) Vapor. D) Liquid. Show Answer Correct Answer: D) Liquid. 10. What will happen to the period of the pendulum when it is brought to Jupiter from Earth? A) It will be the same. B) It will become zero. C) It will increase. D) It will decrease. Show Answer Correct Answer: D) It will decrease. 11. What is the relation between wavelength, frequency and velocity? A) Velocity of wave = wavelength/frequency. B) Velocity of wave = frequency/wavelength. C) Velocity of wave = frequency * wavelength. D) None of above. Show Answer Correct Answer: C) Velocity of wave = frequency * wavelength. 12. What is the maximum height of a projectile launched with initial velocity f 25 m/s at an angle of 30$^ \circ$? A) 15.94 m. B) 7.98 m. C) 63. 76 m. D) 31.89 m. Show Answer Correct Answer: B) 7.98 m. 13. Forces always act in equal and opposite pairs. A) Newton's 3rd Law. B) Newton's 1st Law. C) Newton's 4th Law. D) Newton's 2nd Law. Show Answer Correct Answer: A) Newton's 3rd Law. 14. Power is work done over time or energy over time? A) Work done over time. B) Both. C) Energy over time. D) Neither. Show Answer Correct Answer: B) Both. 15. A ball is thrown downward from the top of a roof with a speed of 25 m/s. After 2 s, its velocity will be:(Choose upward as positive) A) -44.6 m/s. B) -5.4 m/s. C) 19.6 m/s. D) 44.6 m/s. Show Answer Correct Answer: A) -44.6 m/s. 16. What are the net force and the direction of movement? A) 50 N, right. B) 50 N, left. C) 500 N, left. D) 450 N, right. Show Answer Correct Answer: B) 50 N, left. 17. Which correctly describes the relationship between the x-and y-velocities of projectiles? A) The y-component is always greater than the x-component. B) They depend on each other. C) The x-component is equal to the y-component. D) They are independent of each other. Show Answer Correct Answer: D) They are independent of each other. 18. Two charges separated by a distance of 1 meter exert a 20-N force on each other. If the charges are pulled to a 2 meter separation distance, the force on each charge will be A) 10 N. B) 5 N. C) 2.5 N. D) 40 N. Show Answer Correct Answer: B) 5 N. 19. The time it takes an object to go in a circle is called the ..... A) Period. B) Time. C) Frequency. D) Revolution. Show Answer Correct Answer: A) Period. 20. The SI units for force are ..... A) Newtons. B) Pounds. C) Meters per second. D) Kilograms. Show Answer Correct Answer: A) Newtons. 21. Which is the ratio of the water vapor actually present in the atmosphere to the amount that would be present if the air were saturated at the prevailing temperature and pressure A) Absolute humidity. B) Relative humidity. C) Dew point. D) None of above. Show Answer Correct Answer: B) Relative humidity. 22. What is the correct expression of the law of Ohm? A) R = V*I. B) R = V*I. C) V = R/I. D) I = V/R. Show Answer Correct Answer: D) I = V/R. 23. It is energy in an object that is held in a vertical position, due to the force of gravity working to pull it down A) Potential Energy. B) Mechanical Energy. C) Kinetic energy. D) Gravitational Potential Energy. Show Answer Correct Answer: D) Gravitational Potential Energy. 24. What is the product of the net force and the time interval over which it acts? A) Momentum. B) Energy. C) Work. D) Impulse. Show Answer Correct Answer: D) Impulse. 25. What kind of wave is a light wave? A) Transverse. B) Pressure waves. C) Longitudinal wave. D) Sound waves. Show Answer Correct Answer: A) Transverse. 26. A boy throws a small stone into a pond. Waves spread out from where the stone hits the water and travel to the side of the pond. The boy notices that eight waves reach the side of the pond in a time of 5.0s. What is the frequency of the waves? A) 40 Hz. B) 0.20 Hz. C) 1.6 Hz. D) 0.63 Hz. Show Answer Correct Answer: C) 1.6 Hz. 27. A tunnel has a length of 50 km. A car takes 20 min to travel between the two ends of the tunnel. What is the average speed of the car? A) 150 km / h. B) 16.6 km / h. C) 1000 km / h. D) 2.5 km / h. Show Answer Correct Answer: A) 150 km / h. 28. For a capacitor to hold a charge, there must be an interruption of a circuit between its two sides. Which of thefollowing is NOT an example of this interruption A) Conductor. B) Insulator. C) Vacuum. D) Dielectric. Show Answer Correct Answer: A) Conductor. 29. From the various combinations of ..... derived units are obtained. A) Fundamental units. B) Electrical current. C) Metric prefixes. D) 2. Show Answer Correct Answer: A) Fundamental units. 30. Tessie measures her bathroom tiles to be 10 inches by 8 inches. What are the length and width in cm? A) 25.4 cm to 24.5 cm. B) 20.32 cm by 19.6 cm. C) 35.4 cm by 12.32 cm. D) 25.4 cm by 20.32 cm. Show Answer Correct Answer: D) 25.4 cm by 20.32 cm. 31. Energy posses by a body in motion is called A) Potential Energy. B) Kinetic Energy. C) Both of Above. D) None of Above. Show Answer Correct Answer: B) Kinetic Energy. 32. If R1 < R2 < R3, and if these resistors are connected in parallel in a circuit, which one has the highest current? A) R1. B) See. C) Rz. D) All have the same current. Show Answer Correct Answer: A) R1. 33. What is the product of the mass and the velocity of the object? A) Momentum. B) Work. C) Power. D) Impulse. Show Answer Correct Answer: A) Momentum. 34. Find the x-and y-components to a vector that is 89.5 mm at 305$^ \circ$ in standard position. A) -51.3 mm, 73.3 mm. B) 51.3 mm, -73.3 mm. C) 73.3 mm, 51.3 mm. D) -73.3 mm, 51.3 mm. Show Answer Correct Answer: D) -73.3 mm, 51.3 mm. 35. Why are gaps left between the rails of the railway track A) To pass air. B) To allow thermal expansion. C) To allow thermal conductivity. D) None of above. Show Answer Correct Answer: B) To allow thermal expansion. 36. The derived unit of (kg2 m2) / (kg m s2) is equivalent to A) Kg3 m3 / s2. B) Kg2/s2. C) Kg m/s2. D) Kg m/s. Show Answer Correct Answer: C) Kg m/s2. 37. What does the gradient in a distance-time graph give you? A) Acceleration value. B) Numbers. C) Speed value. D) Distance value. Show Answer Correct Answer: C) Speed value. 38. Of the following quantities, the one that is not a scalar in character is ..... A) Energy. B) Electric potential. C) Charge. D) Electric field. Show Answer Correct Answer: D) Electric field. 39. Which of the following is true about a rock moving in outer space? A) It has a constant ACCELERATION. B) It has constant VELOCITY. C) It is moving horizontally. D) It is moving vertically. Show Answer Correct Answer: B) It has constant VELOCITY. 40. It constitutes units based on power of 10 which makes it preferred system to be used in science A) Basic units. B) Measurement. C) Metric system. D) Unit prefixes. Show Answer Correct Answer: C) Metric system. 41. The vector resultant of an object's change in position is the same at its displacement. A) Either true or false. B) True. C) Neither true nor false. D) False. Show Answer Correct Answer: B) True. 42. How much force is needed to keep an object with a constant speed moving? A) Just enough to produce acceleration. B) Greater than the frictional force met by the object. C) Equal to the weight of the object. D) Zero. Show Answer Correct Answer: D) Zero. 43. What is the acceleration of gravity? A) 9.81 m/s/s. B) 10 m/s/s. C) 8 m/s/s. D) 11 m/s/s. Show Answer Correct Answer: A) 9.81 m/s/s. 44. How do you measure final velocity? A) Original velocity + (acceleration x time). B) Original velocity + acceleration. C) Original velocity +time. D) Acceleration x time. Show Answer Correct Answer: A) Original velocity + (acceleration x time). 45. The distance in meters traveled by a particle is related to time (t) in seconds by the equation of motion-S = 10 t +4 t2. What is the initial velocity of the body? A) 10 m/s2. B) 4 m/s. C) 10 m/s. D) 6 m/s. Show Answer Correct Answer: A) 10 m/s2. 46. The maximum velocity upto which fluid motion is streamline is called A) Streamline Flow. B) Terminal Velocity. C) Critical Velocity. D) Viscous Force. Show Answer Correct Answer: C) Critical Velocity. 47. If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same A) Momentum. B) Acceleration. C) Velocity. D) Kinetic energy. Show Answer Correct Answer: A) Momentum. 48. What does gradient give you in a speed-time graph? A) Speed value. B) Yo mama. C) Distance value. D) Acceleration value. Show Answer Correct Answer: D) Acceleration value. 49. If the object is in equilibrium, find the magnitude and direction of the force that produces equilibrium. A) 10N, 53$^ \circ$ S of W. B) 10N, 53$^ \circ$ W of S. C) 10N, 53$^ \circ$ N of E. D) 10N, 53$^ \circ$ E of N. Show Answer Correct Answer: A) 10N, 53$^ \circ$ S of W. 50. Which of the following is true about acceleration? A) Acceleration is not affected by force. B) Decreasing the force increasing the acceleration. C) Increasing the force increases the acceleration. D) Increasing and decreasing the force will not affects acceleration. Show Answer Correct Answer: C) Increasing the force increases the acceleration. 51. Three resistors connected in parallel have individual values of 4.0, 6.0 and 10.0 ohm, respectively. If this combination is connected in series with a 12-V battery and a 2.0-ohm resistor, what is the current in the 10-ohm resistor? A) 16 A. B) 0.59 A. C) 11 A. D) 1.0 A. Show Answer Correct Answer: B) 0.59 A. 52. What is the unit of measurement for energy? A) M/s. B) Work (W). C) Joule (J). D) Newton (N). Show Answer Correct Answer: C) Joule (J). 53. Which of the following would produce the highest pitch? A) Dog's growl. B) Truck horn. C) Whistle. D) Phone. Show Answer Correct Answer: C) Whistle. 54. It is the combination of two or more base units A) Derived units. B) Metric system. C) British or english system. D) Basic units. Show Answer Correct Answer: A) Derived units. 55. The differentiation of velocity with respect to time gives A) Distance. B) Acceleration. C) Velocity square. D) Velocity/2. Show Answer Correct Answer: B) Acceleration. 56. What is another name for fundamental units? A) Atoms. B) Base units. C) Letter symbols. D) The Metric System. Show Answer Correct Answer: B) Base units. 57. A man is walking on a train opposite the trains forward motion. If the man is walking at 2 m/s and the train is moving at 10 m/s how fast is the man moving relative to the ground? A) 10 m/s. B) 2 m/s. C) 12 m/s. D) 8 m/s. Show Answer Correct Answer: D) 8 m/s. 58. In the equation ( $ C=\ f\ \lambda$ ), $ f$ stands for A) Frequency. B) Speed of light. C) Period. D) Wavelength. Show Answer Correct Answer: A) Frequency. 59. An airplane accelerates down a runway at 3.20 m/s/sfor 8 s until it finally lifts off the ground.Determine the velocity at take-off. A) 0.4 m/s. B) 25.6 m/s. C) 2.5 m/s. D) None of above. Show Answer Correct Answer: B) 25.6 m/s. 60. What is the material waves travel through? A) Period. B) Frequency. C) Hertz. D) Medium. Show Answer Correct Answer: D) Medium. ← PreviousNext →Related QuizzesScience QuizzesGeneral Knowledge 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