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[" 7.A stationary object at "4^(@)C" and...

[" 7.A stationary object at "4^(@)C" and weighing "3.5kg" falls from a height of "2000m" on a snow "],[" mountain at "0^(@)C" .If the temperature of the object just before hitting the snow is "0^(@)C" and the "],[" object comes to rest immediately "(g=10m/s^(2))" and (latent heat of ice "=3.5times10^(5)" joule "/sec" ),then the "],[" object will melt "],[[" (a) "2kg" of ice "," (b) "200gm" of ice "],[" (c) "20gm" ice "," (d) "2gm" of ice "]],[hline11^(" th "):" PHYSICS MATERIAL "," SHAKTI SCHOOL "]

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