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Mdcat-past-papers - ETEA - Physics Quiz

Filters: Board: ETEA | Subject: Physics |
61. The waves in which the particles of the medium vibrate about their mean position along the direction of propagation of the waves are called:



62. The number of waves passing through a certain point in unit time is called:



63. A wave is characterized by three physical parameters:



64. Which type of waves can be polarized?



65. For longitudinal waves:



66. A tuning fork having frequency 440 Hz produces sound waves which travel with a speed of 340 m/s. What is the separation between compression and adjacent rarefaction?



67. The speed of sound in a medium containing ideal gas is NOT dependent on?



68. There are 2 pianos playing the same note. One has a frequency of 223.20Hz and the other 223.50Hz. The beat frequency between them will be:



69. What happens when two waves of the same frequency and amplitude meet in phase?



70. The apparent change in frequency caused by source/listener motion is called:



71. In Doppler effect, the apparent frequency is ___ actual frequency when source moves toward observer:



72. A police car, with its siren on, is moving towards a stationary listener. How does the stationary listener receive the frequency of the sound emitted by the siren? It:



73. Astronomers calculate speed of distant stars/galaxies using of the following phenomena?



74. An isolated thermodynamic system:



75. Consider an ideal gas that confine to the cylinder with a fixed piston. on heating the gas, all the heat supplied increases



76. What happens to a football which is inflated in a warm room and is used to play outside in cold weather?



77. In an adiabatic process, how does the temperature of a gas change as its volume decreases?



78. During an isothermal expansion of an ideal gas, which of the following statement is true?



79. Two bodies A and B of temperatures T_A = 100°C and T_B = 0°C are brought in thermal contact with each other. Which one in the followings is possible at thermal equilibrium?



80. The thermal energy required to cause a unit temperature rise is called:



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