Physics Test 94...

Two wires A and B have the same length and area of cross–section, but the Young's modulus of A is two times the Young's modulus of B. Then the ratio of force constant of A to that of B is :–

A ball of relative density 0.8 falls into water from a height of 2m. The depth to which the ball will sink is (neglect the viscous force) :–

Reynolds's number is explained by which relation:-

Modulus of rigidity of ideal liquid is :-

The maximum load a wire can with stand without breaking, when it's length is reduced to half of it's original length, will be :-

For the shown diagram, find range of liquid coming out from small hole :-
(g = 10 m/s²)

64 water drops are combined to form a big drop surface energy of big drop is m times of any small drop. m is :–

Find increase in length of the rod under shown situation :-

A metal sphere of radius R and density ρ is immersed in a liquid of density σ(< ρ). Now a spherical cavity is made inside the sphere, for what minimum radius of cavity it will float in liquid ?

When a capillary tube is immersed into liquid, the liquid neither rises nor falls in the capillary :- (Correct option/options are)

(a) The angle of contact may be 0°

(b) The angle of contact may be 90°

(c) The surface tension of liquid may be infinite

(d) The surface tension of liquid may be zero