A laser beam of pulse power $10^{12}\ W$ is focused on an object of area $10^{- 4}\ {cm}^{2}.$ The energy flux in Watt ${cm}^{- 2}.$ The energy flux in Watt ${cm}^{- 2}$ at the point of focus is

Question

Dr. Abubacker · Accepted Answer

(b) Electric flux
$\phi = \frac{pulse\ power}{area} = \frac{10^{12}}{10^{- 4}} = 10^{6}\ {Wcm}^{- 2}$

Q. A laser beam of pulse power $10^{12}\ W$ is focused on an object of area $10^{- 4}\ {cm}^{2}.$ The energy flux in Watt ${cm}^{- 2}.$ The energy flux in Watt ${cm}^{- 2}$ at the point of focus is

Explanation

Reviewed by Dr. Abubacker

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