A) 2m
B) 5m
C) 9m
D) 18m
Correct Answer: A
Solution :
[a] Given that density of ice=\[\frac{9}{10}\times \]density of water, so only \[\frac{1}{10}th\]of ice will be outside the water. This means that 20\[\times \frac{1}{10}=2\]m of ice layer will be above the water surface. In other words, in the hole, the water level will rise up to 18m of the ice layer. So minimum length of rope required =2 m.You need to login to perform this action.
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