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	Environmental crisis are also known as	Population crisis Entropy crisis War crisis Mass crisis
2	If heat is added to a system, then its entropy will.	Increases and positive Decrease and positive Increases but negative Decreases but negative
3	When hot and cold water are mixed, the entropy.	Decreases Increases Remain constant Zero
4	When temperature of source and sink of a heat engine becomes equal then the entropy change will be.	zero Minimum Maximum Negative
5	The increase in thermal pollution of environment means.	Increase in the entropy Decrease in the entropy Entropy remains constant Entropy becomes zero
6	Not change in entropy of a system after one complete Carnot cycle is.	Positive Negative Zero None of these
7	Entropy of measure of.	Internal energy of system Order of system Disorder of system Potential energy of system
8	In reversible process the entropy of system.	Remain constant Decrease Increase Becomes zero
9	Efficiency of steam locomotive is.	8% 10% 9% 7%
10	The entropy of the universe with passage of time is.	Increases Decreases Remain constant Increases and decreases
11	Force acting on the piston to move outward is.	Compressive stoke Power stoke All stoke Exhaust stoke
12	A cycle of petrol engine undergoes	Two process Three process Four process single process
13	The number of spark plug needed in diesel engine is	0 2 3 4
14	The efficiency of diesel engine is about	25% to 30% 35% to 40% 40% to 50% 50% to 60%
15	No spark plug is needed in the	Petrol engine Diesel engine Gas engine Water engine
16	The actual efficiency of property turned petrol engine is.	20% to 30% 30% to 35% 40% to 45% 25% to 30%
17	The temperature scale which is independent of nature of substance is.	Thermodynamic scale Centigrade scale Fahrenheit scale Regnault scale

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