Question

Assertion : Energy of an isolated particles system is constant.
Reason : Isolated system do not allow exchange of energy

• A. If both assertion and reason are true and reason is the correct explanation of assertion.
• B. If both assertion and reason are true but reason is not the correct explanation of assertion.
• C. If assertion is true but reason is false.
• D. If both assertion and reason are false.

Answer 1

Answer: (A)

As per law of conservation of energy, total energy of isolated system remains constants. As per it energy, can neither be created nor be destroyed. rather it can only be transformed and transferred since isolated system is considered and it does not exchange energy or matter with surrounding, the energy remain constant.