Question

Water rises in a capillary tube to a height $h$. It will rise to a height more than $h$

• A. on the surface of sun
• B. in a lift moving down with an acceleration
• C. at the poles
• D. in a lift moving up with an acceleration

Answer 1

Answer: (B)

When lift is accelerated downwards, the observed weight of body in a lift decreases. Hence, to counter balance the upward pull due to surface tension on the liquid meniscus, the height through which the liquid rises must increase.