Light with an average flux of 20 W/cm^2 falls on a non-reflecting surface at normal incidence having surface area 20 cm^2. The energy received by the surface during time span of 1 minute is :

Light with an average flux of 20 W/cm^2 falls on a… — NEET 2020 Physics PYQ

NEET 2020

Light with an average flux of

20\,\text{W/cm}^2

falls on a non-reflecting surface at normal incidence having surface area

20\,\text{cm}^2

. The energy received by the surface during time span of 1 minute is :

Show answer

Correct option: B

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