Basic Maths and Units and DimensionsHard
Question
Liquid rises to a height of 2cm in a capillary tube. The angle of contact between the solid and the liquid is zero. The tube is depressed more now so that the top of the capillary is only 1cm above the liquid then apparent angle of contact between the solid and liquid is :-
Options
A.0o
B.30o
C.60o
D.90o
∴ h ∝ cos θ
⇒ θ = 60°Topic: Basic Maths and Units and Dimensions·Practice all Basic Maths and Units and Dimensions questions
More Basic Maths and Units and Dimensions Questions
Two blocks A and B of masses 3 m and m respectively are connected by a massless and 1nextensible string. The whole syste...An air column, closed at one end and open at the other, resonates with a tuning fork when the smallestlength of the colu...A closed gas cylinder is divided into two parts by a piston held tight. The pressure and volume of gas in two parts resp...A solid cylinder of mass M and radius R rolls without slipping down on an inclined plane of length L and height h. What ...A light string passing over a smooth light pulley connects two blocks of masses m1 and m2 (vertically). If the accelerat...