Question

The energy equivalent to $1kg$ of matter in (in Joule)

• A. ${10}^{17}$
• B. ${19}^{20}$
• C. ${10}^{11}$
• D. ${10}^{14}$

Answer 1

The correct option is A ${10}^{17}$

Einstein mass -energy relation : $E=m{c}^2=1\times (3\times {10}^8{)}^2=9\times {10}^{16}\sim {10}^{17}$ J