Post-UTME Physics 2010 Objective — Question 1
Question 1 of 10 from the Post-UTME Screening (Post-UTME) Physics 2010 Objective paper, with the correct answer and a full explanation.
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The amount of energy released when 0.5kg of uranium is burnt completely is
- A. 4.5×10¹¹J
- B. 1.5×10¹¹J
- C. 1.5×10¹²J
- D. 4.5×10¹²J
Explanation
Using E=mc² with c=3×10⁸m/s: E=0.5×(3×10⁸)²=0.5×9×10¹⁶=4.5×10¹⁶J. The exponents in the scanned options did not fully match this figure, so the precise lettered answer could not be confirmed from the source.
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