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1.
Coefficient of isothermal elasticity 
and coefficient of adiabatic elasticity 
are related by 
and coefficient of adiabatic elasticity are related by
2.
The length of an elastic string is a metre when the tension is 44 N, and b metre when the tension is 5 N. The length in metre when the tension is 9 N, is
3.
The following four wires of length L and radius r are made of the same material. Which of these will have the largest extension, when the same tension is applied?
4.
When a weight of 
is suspended from a copper wire of length 
and diameter 
, its length increases by 
. If the diameter of the wire is doubled, then the extension in its length will be
is suspended from a copper wire of length and diameter , its length increases by . If the diameter of the wire is doubled, then the extension in its length will be
5.
A wire can be broken by applying a load of 200 N. The force required to break another wire of the same length and same material, but double in diameter, is
6.
The upper end of a wire of radius 4 mm length 100 cm is clamped and its other end is twisted through an angle of 30
. Then angle of shear is
. Then angle of shear is
7.
The potential energy 
between two molecules as a function of the distance 
between them has been shown in the figure. The two molecules are
between two molecules as a function of the distance between them has been shown in the figure. The two molecules are
8.
Young's modulus of perfectly rigid body material is
9.
A wire 
has length 1 m and cross-sectional area 1 
The work required to increase the length by 2 mm is
has length 1 m and cross-sectional area 1 The work required to increase the length by 2 mm is
10.
When a spring is stretched by a distance 
, it exerts a force, given by 
. The work done, when the spring is stretched from 
to 
is
, it exerts a force, given by . The work done, when the spring is stretched from to is