NEET Physics — Thermodynamics

A gas undergoes a cyclic process where $600 \, \text{J}$ of heat is absorbed. What is the net work done by the gas?

What is the change in internal energy for $0.5 \, \text{moles}$ of an ideal gas heated from $250 \, \text{K}$ to $300 \, \text{K}$ at constant volume? ($C_v = 20.8 \, \text{J mol}^{-1} \text{K}^{-1}$)

How much heat is required to raise the temperature of $1 \, \text{kg}$ of copper from $20^\circ \text{C}$ to $50^\circ \text{C}$? (Specific heat of copper = $386.4 \, \text{J kg}^{-1} \text{K}^{-1}$)

An ideal gas expands isothermally at $460 \, \text{K}$ from $3 \, \text{L}$ to $9 \, \text{L}$ with $0.5 \, \text{moles}$. What is the work done by the gas? ($R = 8.3 \, \text{J mol}^{-1} \text{K}^{-1}$)

How much heat is required to raise the temperature of $0.6 \, \text{kg}$ of silver from $20^\circ \text{C}$ to $50^\circ \text{C}$? (Specific heat of silver = $236.1 \, \text{J kg}^{-1} \text{K}^{-1}$)