A) \[12\times {{10}^{3}}J\]
B) \[24\times {{10}^{3}}J\]
C) \[48\times {{10}^{3}}J\]
D) \[10\times {{10}^{3}}J\]
Correct Answer: B
Solution :
| [b] Energy received \[\text{=Intensity }\!\!\times\!\!\text{ Area }\!\!\times\!\!\text{ Time}\] |
| \[=20\times 20\times 60\] |
| \[=24\times {{10}^{3}}J\] |
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