AIIMS 2018 Physics Isolated Systems Assertion Reason Question
Assertion: Energy of an isolated particles system is constant. Reason: Isolated system do not allow exchange of energy.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
The assertion that the energy of an isolated particle system is constant is false because energy can change forms within the system, such as kinetic to potential energy, even if the total energy remains conserved. The reason provided, stating that isolated systems do not allow the exchange of energy, is also false; while isolated systems do not exchange energy with their surroundings, internal energy transformations can still occur. Therefore, both the assertion and reason are incorrect, making option D the correct choice. Options A and B are incorrect because they assume the truth of the assertion and reason, while option C incorrectly claims the assertion is true.
Found an issue with this question?