Physics Project Class 12 ISC. We covered all the Physics Project Class 12 ISC MCQs in this post for free so that you can practice well for the exam.
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Physics Project Class 12 ISC Objective for Students
If the work done on the system or by the system is zero, which of the following statements for a system kept at a certain temperature is correct?
(a) Change in internal energy of the system is equal to the flow of heat in or out of the system.
(b) Change in internal energy of the system is less than heat transferred.
(c) Change in the internal energy of the system is more than the heat flow.
(d) Cannot be determined.
Option a – Change in internal energy of the system is equal to the flow of heat in or out of the system
Blowing air with an open pipe is an example of
(a) isothermal process
(b) isochoric process
(c) isobaric process
(d) adiabatic process
Option c – isobaric process
A cycle tire bursts suddenly. This represents an
(a) isothermal process
(b) adiabatic process
(c) isochoric process
(d) isobaric process
Option b – adiabatic process
Who codified the first two laws of thermodynamics and deduced that the absolute zero of temperature is -273.15°C, leading to the naming of the Kelvin temperature scale?
(a) William Crookes
(b) William Thomson
(c) Luis Alvarez
(d) Robert Hooke
Option b – William Thomson
The statement that ‘heat cannot flow by itself from a body at a lower temperature to a body at a higher temperature’ is known as
(a) Zeroth Law of Thermodynamics.
(b) First Law of Thermodynamics.
(c) Second Law of Thermodynamics.
(d) Third Law of Thermodynamics.
Option c – Second Law of Thermodynamics
The greenhouse effect is the heating up of the Earth’s atmosphere due to
(a) the ultraviolet rays
(b) gamma rays
(c) the infrared rays
(d) X-rays
Option c – the infrared rays
Zeroth Law of Thermodynamics leads to
(a) the concept of temperature.
(b) the concept of specific heat.
(c) the concept of internal energy.
(d) None of the above
Option a – the concept of temperature
The first law of thermodynamics is simply the case of
(a) Charles’s Law
(b) Newton’s Law of Cooling
(c) The Law of Heat Exchange
(d) The Law of Conservation of Energy
Option d – The Law of Conservation of Energy
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