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Impurity Defect

A cube of ice...

Question

A cube of ice is placed on a bimetallic strip at room temperature as shown in the figure. What will happen if the upper strip of iron and the lower strip is of copper?

A

Ice moves downward

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B

Ice moves upward

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C

Ice remains in rest

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D

None of the above

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Solution

The correct option is A Ice moves downward
When ice is placed on iron strip, the temperature of the iron strip falls and thus it shrinks, but the temperature fall hardly reaches the copper strip, thus it bends less. Hence the bimetallic strip bends upwards and the ice moves downwards.

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