Earth receives 1400 W/m² of solar power. If all the solar energy falling on a lens of area 0.2 m² is focussed onto a block of ice of mass 280 g, the time taken to melt the ice will be...minutes. (Latent heat of fusion of ice = 3.3 x 10^5 J/kg)

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Earth receives 1400 W/m² of solar power. If all the
solar energy falling on a lens of area 0.2 m² is
focussed onto a block of ice of mass 280 g, the
time taken to melt the ice will be...minutes.
(Latent heat of fusion of ice = 3.3 x 10^5 J/kg)
Transcribed Image Text:Earth receives 1400 W/m² of solar power. If all the solar energy falling on a lens of area 0.2 m² is focussed onto a block of ice of mass 280 g, the time taken to melt the ice will be...minutes. (Latent heat of fusion of ice = 3.3 x 10^5 J/kg)
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