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1.
A particular force (F) applied on a wire increases its length by 
To increase the wire's length by 
the applied force will be
To increase the wire's length by the applied force will be
2.
The lower surface of a cube is fixed. On its upper surface, force is applied at an angle of 
from its surface. The change will be of the type
from its surface. The change will be of the type
3.
A fixed volume of iron is drawn into a wire of length 
. The extension 
produced in this wire by a constant force 
is proportional to
. The extension produced in this wire by a constant force is proportional to
4.
A rectangular block of size 
is kept in three different positions 
and 
in turn as shown in the figure. In each case, the shaded area is rigidly fixed and a definite force is applied tangentially to the opposite face to deform the block. The displacement of the upper face will be
is kept in three different positions and in turn as shown in the figure. In each case, the shaded area is rigidly fixed and a definite force is applied tangentially to the opposite face to deform the block. The displacement of the upper face will be
5.
To what depth below the surface of sea should a rubber ball be taken as to decrease its volume by 0.1%? [Take : density of sea water 
, Bulk modulus of rubber 
; acceleration due to gravity 
]
, Bulk modulus of rubber ; acceleration due to gravity ]
6.
A steel wire has length 2 m, radius 1 mm and 
A 1 kg sphere is attached to one end of the wire and whirled in a vertical circle with an angular velocity of 2 revolutions per second. When the sphere is at the lowest point of the vertical circle, the elongation of the wire is nearly (Take g = 
A 1 kg sphere is attached to one end of the wire and whirled in a vertical circle with an angular velocity of 2 revolutions per second. When the sphere is at the lowest point of the vertical circle, the elongation of the wire is nearly (Take g =
7.
A wire 
has length 1 m and area of cross-section 1 
The work required to increase its length by 2 mm is
has length 1 m and area of cross-section 1 The work required to increase its length by 2 mm is
8.
When a weight of 5 kg is suspended from a copper wire of length 30 m and diameter 0.5 mm, the length of the wire increases by 2.4 cm. If the diameter is doubled, the extension produced is
9.
A metal bar of length and area of cross-section 
is clamped between two rigid supports. For the material of the rod, its Young's modulus is 
and coefficient of linear expansion is 
. If the temperature of the rod is increased by 
, the force exerted by the rod on the supports is
and area of cross-section is clamped between two rigid supports. For the material of the rod, its Young's modulus is and coefficient of linear expansion is . If the temperature of the rod is increased by , the force exerted by the rod on the supports is
10.
For most materials the Young's modulus is 
times the rigidity modulus, where is
times the rigidity modulus, where is