Assertion :- Mass and energy are not conserved separately, but are ...

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Assertion :- Mass and energy are not conserved separately, but are conserved as a single entity
\( \mathrm{P} \) called 'mass-energy'.

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Reason :- This is because one can be obtained at the - cost of the other as per Einstein's equation.
- (1) A
(2) \( B \)
(3) \( \mathrm{C} \)
(4) D
(A) Both assertion and reason are correct statements, and reason is the correct explanation of the assertion.
(B) Both assertion and reason are correct statements, but reason is not the correct explanation of the assertion.
(C) Assertion is correct, but reason is wrong statement.
(D) Assertion is wrong, but reason is correct statement.
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