11th class Physics chapter 11 online mcq test with answers for FSc part 1 Physics chapter 11 (Optical Instruments)

Physics Fsc Part 1 Chapter 11 Online Test

Sr. #	Questions	Answers Choice
1	S.I Unit of pressure of gas is.	Nm N.m N2/m N3m
2	The SI unit of product of pressure and volume is.	<sub>Watt</sub> Joule Pascal Newton
3	The ideal gas law is.	PV =NVk P = NkT PV =nRT P=nRT
4	Heat is form of.	Power Momentum Energy Torque
5	A device based upon the thermodynamics property of matter is called.	Calorimeter Heat engine thermometer Voltmeter
6	Average translational K.E. of molecules for an ideal gas is given as	1/2 KT KT 2/3 KT 3/2 KT
7	For a gas obeying Boyle's Law, if the pressure is doubled, the volume becomes.	Double Three fold One half Remains the same
8	The energy processes, we use are	Efficient Not efficient Reversible None of these
9	The efficiency of any heat engine can never be	+ve 100% -ve None of these
10	The unit o pressure of gas is	Nm<sup>-2</sup> Pascal Atmosphere All of these
11	Which of following is irreversible process	Slow compression of an elastic spring Slow evaporation of substances in isolated vessel Slow expansion of a gas A chemical explosion <br>
12	First law of thermodynamics can be defined by the equation
13	The molecules of an ideal gas exert	Force on each other No force on each other Large force on each other Pressure on each other
14	The kinetic energy of molecules of an ideal gas at absolute zero is	Very low Very high Zero First increases then decreases
15	Pressure 'P' of a gas is defined as	F/A FA F/V F/D
16	The temperature of human body on Kelvin scale is	210K 310K 410K 510K
17	Mercury is used as a thermometric substance because	It is opaque Does not stick to glass Has low specific heat All of these

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