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Electromagnetic Waves question

2022 · 28 Jul · Shift 2 · Q54
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  5. /2022 · 28 Jul · Shift 2 · Q54

Electromagnetic Waves question

2022 · 28 Jul · Shift 2 · Q54

JEE MainPhysicsElectromagnetic WavesMCQ+4 / −1
Sun light falls normally on a surface of area 36 cm236 \mathrm{~cm}^{2}36 cm2 and exerts an average force of 7.2×10−9 N7.2 \times 10^{-9} \mathrm{~N}7.2×10−9 N within a time period of 20 minutes. Considering a case of complete absorption, the energy flux of incident light is
  1. A
    25.92×102 W/cm225.92 \times 10^{2} \mathrm{~W} / \mathrm{cm}^{2}25.92×102 W/cm2
  2. B
    8.64×10−6 W/cm28.64 \times 10^{-6} \mathrm{~W} / \mathrm{cm}^{2}8.64×10−6 W/cm2
  3. C
    6.0 W/cm26.0 \mathrm{~W} / \mathrm{cm}^{2}6.0 W/cm2
  4. D
    0.06 W/cm20.06\mathrm{~W} / \mathrm{cm}^{2}0.06 W/cm2
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