Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2009PhysicsThermodynamicsActual

Assertion : For an isothermal process in an ideal gas, the heat obsorbed by the gas is entirely used in the work done by the gas. Reason : During a process taking place in a system, the temperature remains constant then the process is isothermal.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion
  2. BIf both assertion and reason are true but reason is not the correct explanation of assertion
  3. CIf assertion is true but reason is false
  4. DIf both assertion and reason are false.

Correct answer

B. If both assertion and reason are true but reason is not the correct explanation of assertion

Step-by-step solution

In case of an ideal gas internal energy depends only upon the temperature of the gas. Therefore, if an ideal gas undergoes an isothermal process, there will be no change in its internal energy ( U=0) Then Q=W .

Practice Thermodynamics on Quantrex Academy →

More from Thermodynamics

The work done by an ideal gas during closed cycle 1 2 3 4 1 as shown in figure is 2026Which of the following statements is NOT CORRECT? In an isothermal process, a. there is perfect thermal equilibrium with environment. b. there is no change in internal energy durin 2026Let ₁ be the efficiency of a Carnot engine at T_H = 547^ C and T_C = 247^ C while ₂ is the efficiency at T_H = 847^ C and T_C = 147^ C . If ₁ = x 41 ₂ , the value of x is 2026Identify the INCORRECT statement for isobaric process. 2026A gas for which = 5 / 3 ( = C_p / C_v ) is heated at constant pressure. The percentage of heat supplied used for external work is 2026A mono-atomic ideal gas, initially at temperature T₁ is enclosed in a cylinder fitted with a frictionless piston. The gas is allowed to expand adiabatically to a temperature T₂ by 2026A gas for which is 3/2 is heated at constant pressure. The percentage of heat supplied for external work is nearly 2026One mole of an ideal gas in initial state A undergoes a cyclic process ABCA, as shown in the figure. Its pressure at A is P₀ . Choose the correct option from the following. 2026 Full Thermodynamics list All NEET PYQs