Practice free Thermodynamics (Physics) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
A car not engine having a efficiency of n = 1 /10 as heat engine is used as a refrigerators. if the work done on the system is 10J. What is the amount of energy absorbed from the reservoir at lowes temperature !
$ n = 1 - { T_2 \over T_1 } $ $ W = Q_2 \left( { T_1 \over T_2} -1 \right) $
The temperature of sink of car not engine is $ 27 ^\circ $ Efficiency of engine is 25% Then find the temperature of source.
$ n = 1 - { T_2 \over T_1 } $
The efficiency of car not's engine operating between reservoirs, maintained at temperature $ 27 ^\circ C and - 123 ^\circ C $ is ......
$ n = 1 - { T_2 \over T_1 } $
If a heat engine absorbs 50KJ heat from a heat source and has efficiency of 40%, then the heat released by it in heat sink is
$ n = 1 - { Q_2 \over Q_1 } $
The efficiency of heat engine is 30% If it gives 30KJ heat to the heat sink, than it should have absorbed............ KJ heat from heat source.
$ n = 1 - { Q_2 \over Q_1 } $
If the doors of a refrigerators is kept open, then which of the following is true?
When the door of a refrigerator is kept open, the refrigerator will continue to pump heat from its inside to the outside. However, since the door is open, the refrigerator will also draw in warm air from the room. This process will result in the room being heated overall because the refrigerator's motor and compressor generate additional heat. Thus, the room will be heated.
Assertion-Reason Read the assertion and reason carefully to mask the correct option out of the options given below. Assertion : The melting point of ice decreases with increase of Pressure Reason : Ice contracts on melting
with rise in pressure melting point of ice decreases. Also ice contracts on melting.
Assertion-Reason Read the assertion and reason carefully to mask the correct option out of the options given below. Assertion : Fahrenheit is the smallest unit measuring temperature. Reason : Fahrenheit was the first temperature scale used for measuring temperature.
celcius scale was the first temperature scale and Fahrenheit is the smallest unit measuring.
Assertion-Reason Read the assertion and reason carefully to mask the correct option out of the options given below. Assertion : A beakes is completely, filled with water at $4 ^\circ C $ . It will overlow, both when heated or cooled. Reason : These is expansion of water below $ 4 ^\circ C $
Water has maximum density at $4 ^\circ C $ on heating above $ 4 ^\circ C $ or cooling below $ 4 ^\circ C $ density of water decreases and its volume , therefore, water overflows in the both cases.
Assertion-Reason Read the assertion and reason carefully to mask the correct option out of the options given below. Assertion : The total translation kinetic energy of all the molecules of a given mass of an ideal gas is 1-5 times the product of its Pressure and its volume. Reason : The molecules of a gas collide with each other and velocities of the molecules change due to the collision
car not cycle has maximum efficiency
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