Assertion: According to law of conservation of machainical energy change in potential energy is equal and opposite to the change in kinetic energy
Reason: Mechanical energy is not a conserved quantity.

Options

A. If both, Assertion and Reason are true and Reason is correct explantion of Assertion.
B. If both, Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
C. If Assertion is true but the Reason is false.
D. If both, Assertion and Reason are false.

Answer

C

Explanation

Here, Assertion is true, but the reason is false.
Accroding to law of conservation fo mechanical energy `(` If no external forces do work on a system `)`, for internal conservation forces, `K+U=`constant or ``DeltaK+DeltaU=0` or `DeltaK=-DeltaU`