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
If energy (E), velocity (V) and time (T) are chosen as the fundamental quantities, the dimensional formula of surface te...Two blocks A and B of masses 3 m and m respectively are connected by a massless and 1nextensible string. The whole syste...Consider a spherical shell of radius R at temperature T. The black body radiation inside it can be considered as an idea...An object is placed in front of an equiconvex lens with refractive index 1.5 and radius of curvature 30cm. Surface which...Match the LIST-I with LIST-II List-I List-II A. Spring constant I. $${ML}^{2}{\text{ }T}^{- 2}{\text{ }K}^{- 1}$$ B. The...