An ice cube is suspended in vacuum in a gravity-free hall. As the ice melts it
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a
will retain its cubical shape
b
will change its shape to spherical
c
will fall down on the floor of the hall
d
will fly up
answer is B.
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Detailed Solution
Melting of ice cube in vacuum in gravity free hall, its shape will change to spherical, as for a given volume sphere has minimum surface area, and free surface of liquid always try to reduce surface area due to surface tension.