Properties of Matter 4 Question 7
9. A uniform capillary tube of inner radius is dipped vertically into a beaker filled with water. The water rises to a height in the capillary tube above the water surface in the beaker. The surface tension of water is . The angle of contact between water and the wall of the capillary tube is . Ignore the mass of water in the meniscus. Which of the following statements is (are) true?
(2018 Adv.)
(a) For a given material of the capillary tube,
(b) For a given material of the capillary tube,
(c) If this experiment is performed in a lift going up with a constant acceleration, then
(d)
Show Answer
Answer:
Correct Answer: 9. (a, c)
Solution:
(a)
(b)
(c) If lift is going up with constant acceleration.
It means
(d)