A block of wood is floating on the surface of the water in a beaker. The beaker is covered with a bell jar and the air is evacuated. What will happen to the block?
A
Sink a little
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B
Rise a little
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C
remain unchanged
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D
sink completely
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Solution
The correct option is A Sink a little Breaker is covered with a bell jar and is as is evacuated there is no up thrust and wood has less density than water so it does not completely sink but sink a little.