Assertion : Heat and work are modes of energy | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The Assertion is correct because, according to the first law of thermodynamics, $\Delta U = Q - W$. This equation shows that both heat $(Q)$ and w

Vedclass · Accepted Answer

$(A)$ is true but $(R)$ is false

Vedclass · Answer

(C) The Assertion is correct because, according to the first law of thermodynamics, $\Delta U = Q - W$. This equation shows that both heat $(Q)$ and work $(W)$ are modes of energy transfer that change the internal energy $(\Delta U)$ of a system.However, the Reason is false. In thermodynamics, state variables (or state functions) are properties that depend only on the current state of the system, such as pressure $(P)$, volume $(V)$, temperature $(T)$, and internal energy $(U)$. Heat and work are path functions, meaning their values depend on the process or path taken to reach a state, not just the state itself.Therefore, $(A)$ is true but $(R)$ is false.

Assertion : Heat and work are modes of energy transfer to a system resulting in change in its internal energy.
Reason : Heat and work in thermodynamics are state variables.
The correct option among the following is

Similar Questions

$A$ gas absorbs $18 \ J$ of heat and work done on the gas is $12 \ J$. Then the change in internal energy of the gas is: (in $J$)

In a given process,for an ideal gas,$\Delta W = 0$ and $\Delta Q < 0$. Then,for the gas,

When heat energy of $1500 \; J$ is supplied to a gas at a constant pressure of $2.1 \times 10^5 \; N/m^2$,its volume increases by $2.5 \times 10^{-3} \; m^3$. The increase in the internal energy of the gas in Joules is ...... $J$.

$200\,g$ of water is heated from $40\,^{\circ}C$ to $60\,^{\circ}C$. Ignoring the slight expansion of water,the change in its internal energy is close to ...... $kJ$ (Given specific heat of water $= 4184\,J/kg\cdot K$)

Why does a gas get heated on compression?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Assertion : Heat and work are modes of energy transfer to a system resulting in change in its internal energy.Reason : Heat and work in thermodynamics are state variables.The correct option among the following is