Physics Exam - Final Exam - PDF

1. A cube of ice measuring 2 cm on each side has a density of 0.92 g/cm³. What is the mass of the ice cube? a. 0.72 g b. 7.36 g c. 2.64 g d. 3.68 g 2. A metal block has a volume of 500 cm³ and a mass of 8 kg. What is the density of t...

1. A cube of ice measuring 2 cm on each side has a density of 0.92 g/cm³. What is the mass of the ice cube? a. 0.72 g b. 7.36 g c. 2.64 g d. 3.68 g 2. A metal block has a volume of 500 cm³ and a mass of 8 kg. What is the density of the metal? a. 0.02 g/cm³ b. 1.6 g/cm³ c. 16 g/cm³ d. 32 g/cm³ 3. A liquid has a specific gravity of 0.8. What is its density in g/cm³? a. 0.64 g/cm³ b. 0.80 g/cm³ c. 0.96 g/cm³ d. 1.00 g/cm³ 4. water is flowing through a horizontal tube having an unequal area of cross section. at the most narrow place of the pipe a. velocity of water is maximum and pressure minimum b. velocity of water is minimum and pressure maximum c. velocity of water is maximum and pressure maximum d. velocity of water is minimum and pressure minimum 5. A hydraulic lift has a small piston with a diameter of 2 cm and a large piston with a diameter of 10 cm. If a force of 100 N is applied to the small piston, what is the force exerted by the large piston? a. 100 N b. 200 N c. 2500 N d. 1,000 N 6. Gases are ________________ fluids. a. Compressible b. In-compressible c. Solid in phase d. Super-compressive 7. A tank containing as high as 1 meter (g is 10m/s) and on the wall there is a leak hole at 20cm). the speed of water is coming out of the hole is a. 4.00 m/s b. 2.50 m/s c. 3.57 m/s d. 5.57 m/s 8. With the increase in the weight of an object the pressure a. increase b. decrease c. remains unchanged d. it fluctuate 9. Which of the following is a statement of Archimedes' principle? a. Buoyant force is the weight of the volume of water displaced by an immersed object b. Buoyant force is the weight of the surface area displaced by an immersed object c. Buoyant force is the weight of the mass of water displaced by an immersed object d. Buoyant force is the weight of the mass of an immersed object Page 1 | 9 Final Exam, Physics Lecture  10. How much of an iceberg is submerged below the water if the density of ice is 917 kg/m^3 and the density of water is 100 kg/m^3 a. 100 % b. 8.3% c. 9.3% d. 91.7% \ 11. A scuba diver goes from the surface of the ocean to a depth of 20 meters. What is the increase in pressure on the diver due to the water? a. 1 atm b. 2 atm c. 3 atm d. 4 atm 12. A U-shaped tube contains water on one side and oil on the other side. The oil has a specific gravity of 0.8. If the height of the water column is 10 cm, what is the height of the oil column? a. 8 cm b. 10 cm c. 12.5 cm d. 15 cm 13. An instrument used to measure atmospheric pressure. a. Barometer b. thermometer c. wind vane d. all of the above 14. According to Pascal's principle, what happens to pressure in a fluid when an external pressure is applied? a. The pressure in the fluid remains the same. b. The pressure in the fluid decreases. c. The pressure in the fluid increases. d. The pressure in the fluid may increase or decrease depending on the type of fluid. 15. Why does a boat float in water? a. Because the boat is less dense than the water it displaces. b. Because the boat is more dense than the water it displaces. c. Because the boat has a greater weight than the water it displaces. d. Because the boat exerts a greater buoyant force on the water than the weight of the boat. 16. What is the relationship between the velocity of a fluid and its pressure, according to Bernoulli's principle? a. As the velocity of a fluid increases, its pressure increases. b. As the velocity of a fluid increases, its pressure decreases. c. The velocity of a fluid has no effect on its pressure. d. The relationship between velocity and pressure in a fluid cannot be determined. 17. Which of the following is an example of laminar flow? a. Water flowing out of a faucet in a straight, steady stream. b. The swirling of water in a bathtub drain. c. Air turbulence behind a moving vehicle. d. Water flowing over rocks in a river. 18. Which of the following statements is true regarding Torricelli's Theorem? a. It states that the pressure of a fluid decreases as its velocity increases. b. It states that the speed of a fluid increases as its pressure decreases. c. It states that the volume of a fluid flowing through a pipe is constant. d. It states that the height of a fluid in a container is proportional to the pressure applied to it. 19. As you ascend higher into the atmosphere, what happens to atmospheric pressure? a. It remains constant. Page 2 | 9 Final Exam, Physics Lecture  b. It increases. c. It decreases. d. It fluctuates randomly. 20. How is blood pressure measured? a. By measuring the force of blood against the walls of the heart. b. By measuring the amount of blood flowing through the arteries. c. By measuring the pressure of blood in the veins. d. By measuring the pressure of blood in the arteries. 21. What is sound? a. A type of light wave b. A type of electromagnetic radiation c. A type of mechanical wave d. A type of thermal wave 22. What is the Doppler effect? a. The change in frequency of a wave as its source moves relative to an observer b. The reflection of sound waves off of a surface c. The bending of sound waves as they pass through a medium d. The interference of two sound waves with the same frequency 23. What is the wavelength of a sound wave? a. The distance between two adjacent compressions or rarefactions b. The distance between two adjacent crests or troughs c. The distance between two adjacent nodes d. The distance between two adjacent antinodes 24. What is the amplitude of a sound wave? a. The distance between two adjacent compressions or rarefactions b. The distance between two adjacent crests or troughs c. The maximum displacement of a particle from its rest position d. The number of complete waves that pass a given point in one second 25. Which characteristic of sound is related to its pitch? a. Amplitude b. Frequency c. Wavelength d. Velocity 26. What is resonance in sound? a. The reflection of sound waves off of a surface b. The interference of two sound waves with the same frequency c. The amplification of sound due to the natural frequency of an object d. The bending of sound waves as they pass through a medium 27. Which of the following is not a factor affecting the velocity of sound in a medium? a. Temperature b. Density c. Humidity d. Color 28. Will the velocity of sound be different in the morning compared to at night? a. Yes, the velocity of sound is slower in the morning. b. Yes, the velocity of sound is faster in the morning. c. No, the velocity of sound is the same regardless of the time of day. d. It depends on the atmospheric conditions at the time. 29. What effect can temperature changes have on the velocity of sound? a. An increase in temperature causes an increase in the velocity of sound. Page 3 | 9 Final Exam, Physics Lecture  b. A decrease in temperature causes an increase in the velocity of sound. c. Temperature changes have no effect on the velocity of sound. d. Temperature changes can cause the velocity of sound to increase or decrease depending on the direction of the temperature change. 30. A wave has a frequency of 50 Hz and a wavelength of 10 meters. What is the wave's speed? a. 5 m/s b. 50 m/s c. 500 m/s d. 5000 m/s 31. A spring has a stiffness of 10 N/m and is stretched 5 cm from its equilibrium position. What is the force exerted by the spring? a. 0.5 N b. 1 N c. 5 N d. 50 N 32. A pendulum has a length of 1 meter and a mass of 0.5 kg. What is the period of the pendulum? a. 0.5 s b. 1 s c. 2 s d. 4 s 33. Which of the following is not an electromagnetic wave? a. Radio waves b. X-rays c. Sound waves d. Light waves 34. A wave has a frequency of 100 Hz and a speed of 340 m/s. What is the wavelength of the wave? a. 3.4 m b. 34 m c. 340 m d. 3400 m 35. A bat is flying towards a stationary wall at a constant speed of 50m/s. The bat emits a sound of 125Hz towards the wall, which is then reflected back at the bat. If the speed of sound in air is 343m/s, what is the frequency of sound that the bat experiences? a. 167.6Hz b. 146.3Hz c. 143.2Hz d. 164.1Hz 36. In which of the following media does sound travel the fastest? a. Air b. Water c. Steel d. Sound travels at the same speed in all media 37. What is the name of the part of a wave that represents the distance between two successive crests or troughs? a. Amplitude b. Frequency c. Wavelength d. Period Page 4 | 9 Final Exam, Physics Lecture  38. What type of wave is produced by an elastic spring that is stretched and released? a. Transverse wave b. Longitudinal wave c. Electromagnetic wave d. None of the above 39. What is the name of the physical property that determines the loudness of a sound? a. Amplitude b. Frequency c. Wavelength d. Velocity 40. Which of the following is an example of energy transmission by a wave? a. Light shining on a surface b. Heat transfer by convection c. Sound vibrating through a medium d. All of the above 41. What is the phenomenon of bending of light as it passes from one medium to another of different optical density called? a. Reflection b. Dispersion c. Refraction d. Interference 42. Which of the following is a property of polarized light? a. Its oscillations are in a single plane. b. It is composed of multiple wavelengths. c. It has a constant intensity. d. It is not affected by the orientation of a polarizer. 43. What is the phenomenon of splitting of white light into its component colors called? a. Reflection b. Refraction c. Diffraction d. Dispersion 44. Which type of lens is used to correct nearsightedness? a. Convex lens b. Concave lens c. Plano-convex lens d. Plano-concave lens 45. Which of the following is the correct relationship between wavelength and frequency of light? a. Directly proportional b. Inversely proportional c. No relationship d. Cannot be determined 46. For a telescope, the larger the diameter of the objective lens a. Greater the resolving power b. Greater the magnifying power c. Smaller the resolving power d. Smaller the magnifying power 47. Which of the following is a type of interference where two waves of equal amplitude and frequency cancel each other out? a. Constructive interference Page 5 | 9 Final Exam, Physics Lecture  b. Destructive interference c. Resonance d. Standing wave 48. The change in the frequency of a wave as the source of the wave or the observer moves called? a. Diffraction b. Interference c. Refraction d. Doppler effect 49. Which of the following is true about the law of reflection? a. The angle of incidence is equal to the angle of refraction. b. The angle of incidence is greater than the angle of reflection. c. The angle of incidence is less than the angle of reflection. d. There is no relationship between the angle of incidence and the angle of reflection. 50. What is the relationship between distance and illumination, according to the inverse square law? a. Illumination increases as distance increases b. illumination decreases as the square of the distance increases. c. Illumination remains constant regardless of distance d. Illumination is not related to distance 51. When light passes through a medium and changes direction, it is called: a. Reflection b. Refraction c. Diffraction d. Polarization 52. Which type of lens is thicker at the center than at the edges? a. Convex lens b. Concave lens c. Plano-concave lens d. Plano-convex lens 53. What is dispersion of light? a. The bending of light as it passes through a medium b. The splitting of light into different colors c. The reflection of light off a smooth surface d. The interference of light waves 54. Interference occurs when: a. Light passes through a medium and changes direction b. Light reflects off a smooth surface c. Two or more waves of light meet and interact d. Light is split into different colors 55. Which of the following is an example of polarized light? a. Sunlight b. Light from a lamp c. Light from a candle d. Light through polarized sunglasses 56. An object of height 5 cm is placed 25 cm in front of a bi-convex lens with a focal length of 10 cm. What is the height of the image? a. 2.5 cm b. 12.5 cm c. 6.8 cm d. 3.4 cm 57. A purple cabbage is colored purple because Page 6 | 9 Final Exam, Physics Lecture  a. It absorbs only purple light b. It reflects only purple light c. Only purple light can pass through a purple cabbage d. Only purple light actually hits the cabbage 58. What type of lens is required to form an image that is smaller than the object? a. Convex lens b. Concave lens c. Spherical lens d. Cylindrical lens 59. A beam of light passing through a diverging lens of focal length 0.3m appear to be focused at a distance 0.2m behind the lens. Find the position of the object. a. -0.6m b. +6 m c. -6 m d. +0. 6cm 60. Light rays travel from vacuum into a glass whose refractive index is 1.5. If the angle of incidence is 30°, calculate the angle of refraction inside the glass. a. 20 degrees b. 35 degrees c. 40 degrees d. 50 degrees 61. Which of the following subatomic particles has a negative charge? a. Proton b. Neutron c. Electron d. Alpha particle 62. What is the force that holds the nucleus of an atom together? a. Gravitational force b. Electromagnetic force c. Weak nuclear force d. Strong nuclear force 63. Which of the following is not a type of radioactive decay? a. Alpha decay b. Beta decay c. Gamma decay d. Delta decay 64. Which of the following particles has the highest ionizing power? a. Alpha particle b. Beta particle c. Gamma ray d. Neutron 65. What is the process by which a nucleus spontaneously breaks apart into smaller fragments? a. Nuclear fusion b. Nuclear fission c. Radioactive decay d. Alpha decay 66. Which of the following is not a product of nuclear fission? a. Neutrons b. Helium nuclei Page 7 | 9 Final Exam, Physics Lecture  c. Energy d. Gamma rays 67. What is the term used to describe the time it takes for half of the atoms in a sample to decay? a. Decay constant b. Activity c. Half-life d. Radioactivity 68. Which of the following is not a beneficial use of radiation? a. Medical imaging b. Cancer treatment c. Nuclear weapons testing d. Food irradiation 69. What is the device used to detect and measure radiation? a. Geiger counter b. X-ray machine c. MRI scanner d. Ultrasound machine 70. What is the most effective method for protecting against radiation exposure? a. Wearing lead clothing b. Avoiding all sources of radiation c. Taking potassium iodide tablets d. Maintaining a healthy lifestyle 71. Which of the following best describes the Stochastic effect of radiation exposure? a. Effects that occur immediately after exposure b. Effects that are deterministic and predictable c. Effects that occur randomly and have a probability of occurrence d. Effects that only occur after prolonged exposure 72. Which of the following is an example of a deterministic effect of radiation exposure? a. Cancer b. Genetic mutations c. Cataracts d. All of the above 73. Why is it dangerous to undergo an X-ray when pregnant? a. The radiation exposure can cause immediate harm to the fetus b. The radiation exposure can cause deterministic effects on the fetus c. The radiation exposure can cause stochastic effects on the fetus d. The radiation exposure has no effect on the fetus 74. Which organ is most sensitive to radiation? a. Liver b. Lungs c. Kidneys d. Bone marrow 75. What is Relative Biologic Effectiveness (RBE)? a. The measure of how harmful a particular type of radiation is b. The measure of how much radiation a person can safely receive c. The measure of how much damage a particular type of radiation does to living tissue compared to X-rays d. The measure of how much radiation a particular organ can tolerate 76. What is the safe radiation dose for an individual? a. There is no safe radiation dose Page 8 | 9 Final Exam, Physics Lecture  b. The safe radiation dose depends on the individual and the circumstances of exposure c. The safe radiation dose is the same for everyone d. The safe radiation dose varies depending on the type of radiation exposure 77. Which of the following is not a radiation protection principle? a. Time b. Distance c. Shielding d. Exposure 78. An atom has an atomic number of 14 and a mass number of 28. How many neutrons does this atom have? a. 14 b. 28 c. 42 d. 2 79. A sample of radioactive material has a half-life of 10 days. If the initial mass of the sample was 100 grams, how much of the sample will be left after 20 days? a. 10gram b. 25gram c. 30gram d. 50gram 80. Which of the following statement is true a. Atomic number 1 to 82 of nuclei are unstable b. All noble gas are radioactive c. Element 92 is the only natural founding element in earth d. Alpha decay is the most common to have an atomic number greater than 83 Prepared by: Checked and Reviewed by: Approved by: Ms. Giermin AJ E. Sahagun Ms. Marie Ann M. Mirando, MA-ELS Ms. Marie Astrid M. Deleon, PhD(c) Instructor Chairperson, General Education College Director Page 9 | 9 Final Exam, Physics Lecture