Earth receives 1400 W m ^-2 of solar power. If all the solar energy falling on lens of area 0.2m^-2 is focussed on to a block of ice of mass 280 g , then what is the time (in min) taken by the ice to melt completely ? [L_("fusion")=3.3xx105 J kg ^-1]

Earth receives 1400 W m ^-2 of solar power. If all the solar energy fa

1.	Earth receives 1400 W m ^-2 of solar power. If all the solar energy falling on lens of area 0.2m^-2 is focussed on to a block of ice of mass 280 g , then what is the time (in min) taken by the ice to melt completely ? [L_("fusion")=3.3xx105 J kg ^-1]
Answer» ANSWER :`5.5`

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Earth receives 1400 W m ^-2 of solar power. If all the solar energy falling on lens of area 0.2m^-2 is focussed on to a block of ice of mass 280 g , then what is the time (in min) taken by the ice to melt completely ? [L_("fusion")=3.3xx105 J kg ^-1]

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