1. The ratio of the lengths of two wires A and B of same material is 1 : 2 and the ratio of their diameter is 2 : 1. They are stretched by the same force, then the ratio of increase in length will be

2. A beam of metal supported at the two ends is loaded at the centre. The depression at the centre is proportional to

3. Two wires of copper having the length in the ratio 4 : 1 and their radii ratio as 1 : 4 are stretched by the same force. The ratio of longitudinal strain in the two will be

4. 

5. The pressure of a medium is changed from 1.01 x 10⁵ Pa to 1.165 x10⁵ Pa and change in volume is 10% keeping temperature constant. The Bulk modulus of the medium is

6.The Young's modulus of the material of a wire is  6 x 10¹² N / m² and  there is no transverse strain in it, then its modulus of rigidity will be

7. The length of a rod is 20 cm and area of cross-section 2 cm². The Young's modulus of the material of wire is 1.4 x 1011 N / m². If the rod is compressed by 5 kg-wt along its length, then increase in the energy of the rod in joules will be

8.  A wire of length 50 cm and cross sectional area of 1 sq. mm is extended by 1 mm. The required work will be (Y = 2 x 1010 N m⁻²)                                                              

9. The stress versus strain graphs for wires of two materials A and B are as shown in the figure. If  and  are the Young ‘s modulii of the materials, then

10.The diagram shows the change x in the length of a thin uniform wire caused by the application of stress F at two different temperatures T₁ and T₂. The variations shown suggest that