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Question

Question: The energy released when 1 g of matter is annihilated is –...

The energy released when 1 g of matter is annihilated is –

A

9 × 1013 J

B

2.5 × 107 kWh

C

Both (1) & (B97)

D

None of these

Answer

2.5 × 107 kWh

Explanation

Solution

E = mc2 = 10–3 × (3 × 108)2 = 9 × 1013 J

E = 9×101336×105\frac { 9 \times 10 ^ { 13 } } { 36 \times 10 ^ { 5 } }kWh = 2.5 × 107 kWh