Consider two wires X and Y. The radius of wire X is 3 times the radius of Y. If they are stretched by the same load then the stress on Y is

If a wire is stretched to double of its original length, then the strain in the wire is

With an increase in temperature, the viscosity of liquid and gas, respectively will

Which of the following is not a scalar?

If the temperature of the wire is increased, then the Young’s modulus will 

A wire 10 m long has a cross-sectional area 1.25\(\times\)10^-4 m². It is subjected to a load of 5 kg. If Young’s modulus of the material is 4\(\times\)10¹⁰ N m^-2, calculate the elongation produced in the wire. Take g = 10 ms^-2.

Define Poisson’s ratio.

State Archimedes principle.

Let 2.4\(\times\)10⁻⁴ J of work is done to increase the area of a film of soap bubble from 50 cm² to 100 cm². Calculate the value of surface tension of soap solution.

Water rises in a capillary tube to a height of 2.0cm. How much will the water rise through another capillary tube whose radius is one-third of the first tube?

Mercury has an angle of contact equal to 140° with soda lime glass. A narrow tube of radius 2 mm, made of this glass is dipped in a trough containing mercury. By what amount does the mercury dip down in the tube relative to the liquid surface outside?. Surface tension of mercury T = 0.456 N m^-1; Density of mercury \(\rho\) = 13.6\(\times\)10³ kg m^-3

State and prove Archimedes principle.

Obtain an expression for the excess of pressure inside a
i) liquid drop
ii) liquid bubble
iii) air bubble.