Elasticity MCQs

11. Question

A wire suspended vertically from one of its ends is stretched by attaching a weight of 100N to its lower end. What is the elastic potential energy stored in the wire, if the weight stretches the wire by 1.5 mm?

12. Question

In an experiment to determine the Young’s modulus of the material of a wire, the length of  the wire and the suspended mass are doubled. Then the Young’s modulus of the wire

13. Question

The following four wires of length L and the radius r are made of same material. Which of these will have the largest extension when the same tension is applied.

14. Question

Which one of he following does not affect the elasticity of a substance?

15. Question

If the work done in stretching a wire by 1 mm is 2 J, the work necessary for stretching another wire of the same material but with double the radius of cross-section and half the length by 1 mm is injoules


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