Physics Fsc Part 1 Chapter 11 Online Test With Answers

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Physics Fsc Part 1 Chapter 11 Online Test

Sr. # Questions Answers Choice
1 According to first law of thermodynamics the quantity which is conserved. Force Momentum Energy Power
2 A system does 600 J of work and at the same time has its internal energy increased by 320 J. How much heat has been supplied. 28o J 920 J 600 J 200 J
3 Pascal is the unit of Pressure Force Tension Weight
4 The internal energy of system does not depend on Temperature Pressure Path Final and initial state
5 A diatomic gas molecules has Translational energy only Rotational energy only Vibrational energy only All translational, Rotational and vibrational energy
6 A gas performs 10 J of work while expanding adiabatically. the change in its internal energy is. 10 J -10 J 100 J -200 J
7 In thermodynamics system internal energy decrease by 100 J and 100 J of work done on the system then heat lost will be. Zero 100 J 200 J -200 J
8 At which of the following temperature a body has maximum internal energy. -273 <sup>o</sup>C 0 K 273 K -273 K
9 For an ideal gas, the internal energy is directly proportional to. Pressure volume Mass Temperature
10 The internal energy of a piece of lead when beaten by hammer will. Increase Decrease Remains constant Increases and then decrease
11 The mean kinetic energy of gas is at. 0 <sup>o</sup>C -273 <sup>o</sup>C 100 K 100 <sup>o</sup>C
12 If the temperature of a gas is constant then <1/2 mv2> of the molecules of gas will be. Constant Zero Increase Decrease
13 Boltzman constant 'k' has same unit as. Temperature Energy Entropy Pressure
14 Temperature of a gas is increased from 27 oC to 127 oC. The ratio of its mean K.E. will be 3/4 9/16 4/3 10/9
15 At constant temperature and pressure, if volume of given mass of a gas is doubled then density is. Doubled 1/4 original 1/2 of original Unchanged
16 The potential energy to the molecules of an ideal gas is considered to be. Maximum Zero 1/2 kx<sup>2</sup> 1/2 kx
17 A constant temperature, if pressure of a given mass of gas is halved, then its volume becomes. Halve Doubled Four time Constant
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