Grade 12th pass10 grade science
Light with an energy flux of 18W/cm2 falls on a non-reflecting surface at normal incidence. The surface has an area of 20cm2, then the total momentum delivered on the surface during the span of 30 minutes is
A. 1.2×10−6kgms−1B. 2.16×10−3kgms−1C. 1.18×10−3kgms−1D. 3.2×10−3kgms−1
Light with an energy flux of 18W/cm2 falls on a non-reflecting surface at normal incidence. The surface has an area of 20cm2, then the total momentum delivered on the surface during the span of 30 minutes is
A. 1.2×10−6kgms−1B. 2.16×10−3kgms−1C. 1.18×10−3kgms−1D. 3.2×10−3kgms−1
