MHT CET · Physics · Mechanical Properties of Fluids
Water rises upto a height ' \(\mathrm{h}\) ' in a capillary tube on the surface of the earth. The value of 'h' increases, if the capillary tube apparatus is kept
- A in a lift going upward with acceleration.
- B on the sun.
- C on the poles.
- D in a lift going downward with acceleration (a) where a \( < \mathrm{g}\) (acceleration due to gravity)
Answer & Solution
Correct Answer
(D) in a lift going downward with acceleration (a) where a \( < \mathrm{g}\) (acceleration due to gravity)
Step-by-step Solution
Detailed explanation
\(h=\frac{2 T \cos \theta}{r \rho g} \quad \therefore h \propto \frac{1}{g}\)
In a lift going downwards with acceleration \(a\), the apparent value of \(g\) decreases and hence \(b\) increases.
In a lift going downwards with acceleration \(a\), the apparent value of \(g\) decreases and hence \(b\) increases.
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