A pond has an ice layer of thickness 3 cm. If K of ice is 0.005 CGS units, surface tempera-ture of surroundings is -20^(0)C, density of ice is 0.9 gm/cc, the time taken for the thickness to increase by 1 cm is

A pond has an ice layer of thickness 3 cm. If K of ice is 0.005 CGS un

1.	A pond has an ice layer of thickness 3 cm. If K of ice is 0.005 CGS units, surface tempera-ture of surroundings is -20^(0)C, density of ice is 0.9 gm/cc, the time taken for the thickness to increase by 1 cm is
Answer» 30 min 35 min 42 min 60 min Answer :C