Properties Of Solids And Liquids Question 176

Question: Water rises upto a height h in a capillary on the surface of earth in stationary condition. Value of h increases if this tube is taken [RPET 2000]

Options:

A) On sun

B)On poles

C) In a lift going upward with acceleration

D) In a lift going downward with acceleration

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Answer:

Correct Answer: D

Solution:

If lift moves downward with some acceleration theneffective g decreases, so h increases. As $ h=\frac{2T\cos \theta }{rdg} $ $ h\propto \frac{1}{g} $



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