Question: Calculate the power per unit area delivered by a laser pulse of energy 4.0 x 103 Joule and the pulse length in time as

Calculate the power per unit area delivered by a laser pulse of

Calculate the power per unit area delivered by a laser pulse of energy 4.0 x 103 Joule and the pulse length in time as 109 sec. When the pulse is focused on target to a very small spot of radius 1.5 x 10$ m.

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