Physics · PYQ NEET UG 2020
हिन्दीThe energy equivalent of 0.5 g of a substance is:
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Correct answer · Option A
\( 4.5 \times 10^{13}\text{ J} \)
Explanation
Using Einstein's mass-energy equivalence: \( E = mc^2 = (0.5 \times 10^{-3}\text{ kg}) \times (3 \times 10^8\text{ m/s})^2 = 4.5 \times 10^{13}\text{ J} \).