Light with an energy flux of 18 W/cm 2 falls on a non-reflecting surface at normal incident. If the surface has an area of 20 cm 2 , find the total momentum delivered (for complete absorption) during a 30 minute time span?

Correct Answer is : 2.16 × 10-3 kg m/s

AAI ATC Junior Executive 25 Mar 2021 Shift 1 Paper

Question : 113 of 120

Marks: +1, -0

Light with an energy flux of 18 W/cm² falls on a non-reflecting surface at normal incident. If the surface has an area of 20 cm², find the total momentum delivered (for complete absorption) during a 30 minute time span?

2.16 kg m/s
2.16 × 10^-3 kg m/s
2.16 × 10^-5 kg m/s
2.16 × 10^-2 kg m/s

Validate

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