Engineering
Physics
Liquid Pressure
Buoyancy
Forces and Types of Forces
Question

Statement-1 : When we dip our hands in a beaker filled partially with water, the force on bottom of beaker increases.
Statement-2 : The liquid level increases.

Statement-1 is false, statement-2 is true.

Statement-1 is true, statement-2 is false.

Statement-1 is true, statement-2 is true and statement-2 is correct explanation for statement-1.

Statement-1 is true, statement-2 is true and statement-2 is NOT the correct explanation for statement-1.

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Solution
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When you dip your hand in the water, you displace a volume of water, causing the liquid level to rise (Statement-2 is true). The force on the bottom of the beaker is the product of the hydrostatic pressure at the bottom and the area: F=P×A=ρghA. Since the height h increases, the pressure and thus the force also increases (Statement-1 is true). The rise in level is the direct cause for the increased force, so Statement-2 is the correct explanation for Statement-1.

Final Answer: Statement-1 is true, statement-2 is true and statement-2 is correct explanation for statement-1.