Question

Assertion (A) : The contact angle depends on material of solid and liquid.

Reason (R) : Height of the liquid in a capillary tube is independent of the radius of the tube.

(1) Both (A) and (R) are true and (R) is the correct explanation of (A)

(2) Both (A) and (R) are true but (R) is not the correct explanation of (A)

(3) (A) is true but (R) is false

(4) (A) is false but (R) is true

Answer 1

Correct Option is (3) (A) is true but (R) is false 

Also, \(h= \frac{2scos\Theta}{\rho{gr}}\) 

\(\Rightarrow\) h depends on r