CUET · PHYSICS · PYQ PAPER 2025
Express 16 mg mass into equivalent energy in Ev
- A \( 9 \times 10^{30} \, eV \)
- B \( 9 \times 10^{29} \, eV \)
- C \( 9 \times 10^{16} \, eV \)
- D \( 10^{28} \, eV \)
Answer & Solution
Correct Answer
(A) \( 9 \times 10^{30} \, eV \)
Step-by-step Solution
Detailed explanation
\( m = 16 \times 10^{-6} \, \text{kg} \) \( E = mc^2 = (16 \times 10^{-6} \, \text{kg})(3 \times 10^8 \, \text{m/s})^2 \) \( E = 1.44 \times 10^{12} \, \text{J} \) \( E_{eV} = \frac{1.44 \times 10^{12} \, \text{J}}{1.602 \times 10^{-19} \, \text{J/eV}} \)…
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