Question

define first law of thermodynamics

Answer 1

It states that the change in the internal energyΔU of a closed system is equal to the amount of heat Q supplied to the system, minus the amount of work W done by the system on its surroundings.

Answer 2

Answer:

First law of thermodynamics:-)

lt is simply the law of conservation of energy applied to an system in which energy transfer( in the form of heat or work) from or to the surroundings is taken into consideration. According to first law of thermodynamics, if some heat is supplied to a system which is capable of doing work then the quantity of heat absorbed by the system will be equal to the sum of the increase in its internal energy and the external work done by the system of the surrounding.

$\Huge \triangle \: Q \: = \triangle \: U \: + \triangle \: W$

where

$\Huge \triangle \: Q \: = Heat supplied to the system by surroundings \: \\ \triangle \: U = Change in internal energy of the system \\ \triangle \: W = Work done by the system on the surroundings$