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1.
On increasing the length by 0.5 mm in a steel wire of length 2 m and area of cross-section 2 
the force required is 
the force required is
2.
When a force is applied on a wire of uniform cross-sectional area 
and length 4 m, the increase in length is 1mm. Energy stored in it will be
and length 4 m, the increase in length is 1mm. Energy stored in it will be
3.
The compressibility of water is 
. If one litre is subjected to a pressure of 
, the decrease in its volume is
. If one litre is subjected to a pressure of , the decrease in its volume is
4.
The length of an elastic spring is 
metres when a force of 4 N is applied, and 
metres when the 5 N force is applied. Then the length of the spring when the 9 N force is applied is
metres when a force of 4 N is applied, and metres when the 5 N force is applied. Then the length of the spring when the 9 N force is applied is
5.
The graph shows the behaviour of a length of wire in the region for which the substance obeys Hooke's law. 
and 
represent
and represent
6.
Compressibility of water is 
The change in volume of 100 mL water subjected to
pressure will
The change in volume of 100 mL water subjected to pressure will
7.
A force of 
is applied at one end of a wire of length 
and having area of cross-section 
. The other end of the wire is rigidly fixed. If coefficient of linear expansion of the wire 
and Young's modulus 
and its temperature is increased by 
, then the increase in the tension of the wire will be
is applied at one end of a wire of length and having area of cross-section . The other end of the wire is rigidly fixed. If coefficient of linear expansion of the wire and Young's modulus and its temperature is increased by , then the increase in the tension of the wire will be
8.
If a spring extends by 
on loading, then the energy stored by the spring is (if 
is tension in the spring and 
is spring constant)
on loading, then the energy stored by the spring is (if is tension in the spring and is spring constant)
9.
If Young's modulus of elasticity Y for a material is one and half times its rigidity coefficient 
the Poisson's ratio 
will be
the Poisson's ratio will be
10.
A 100 N force stretches the length of a hanging wire by 0.5 mm. The force required to stretch a wire, of the same material and length but having four times the diameter, by 0.5 mm is