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Question

A certain laser transition emits 6.37×1015 quanta sec1m2. Calculate the power output in J sec1 m2.
Given: λ=632.8 nm

A
2.5×103 J sec1 m2
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B
2.0×103 J sec1 m2
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C
1.6×103 J sec1 m2
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D
2.3×103 J sec1 m2
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