Consider the following statements:1. In a beaker, a plank of wood floats in water. If the beaker moves with a vertical acceleration, the wooden plank will sink deeper into the liquid.
- An ice cube containing a lead piece in it is floating in a glass of water. As ice melts, the water level will fall.
Which of the given statements is/are correct?
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Only (1)
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Only (2)
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Both (1) & (2)
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None of these
B
Correct answer
Explanation
Statement (1) is wrong. If the beaker moves with a vertical acceleration, the wooden plank will remain in the same position relative to the water.
Statement (2) is correct. The lead piece has greater density, while the ice cube is floating, it will be displacing a volume of water equal to the weight of the ice plus the weight of the iron.
When the ice has melted, the iron will sink. Its volume will displace the same volume of water, its weight no longer has a bearing on how much is displaced.