NEET UG PHYSICS MCQ: ELECTROMAGNETIC WAVES

1 Hard

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Application +4 | -1

Light with energy flux of

18\frac{W}{{c{m^2}}}

falls on a non-reflecting surface of area

20\,\,c{m^2}

at normal in cadence the momentum delivered in 30 minutes is [in kgm/s]

View answer and explanation

Correct option: B

2.16 \times {10^{ - 3}}

Option B (

2.16 \times {10^{ - 3}}

) is correct because it is calculated by finding the momentum delivered by the light to the surface over the given time.

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