The thickness of the ice layer on the surface of lake is 20 m. A hole – McqOptions

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1.	The thickness of the ice layer on the surface of lake is 20 m. A hole is made in the ice layer. What is the minimum length of the rope required to take a bucket full of water out? (Take density of ice =\[0.9\times {{10}^{3}}kg/{{m}^{3}}\])
A.	2m
B.	5m
C.	9m
D.	18m
Answer» B. 5m

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