Elasticity MCQs
21. Question
Which of the following is dimensionless quantity?
Answer
22. Question
A wire of length L, radius r, when stretched with a force F, changes in length l. what will be the change in length in a wire of same material having length 2 L, radius 2 r and stretched by a force of 2 F (MPPMT 80, 96)
Answer
23. Question
The energy per unit volume of a stretched wire is,
Answer
24. Question
A steel ring of radius r and cross sectional area A is fitted onto a wooden disc of radius R(R > r). If the Youngs modulus of steel is Y, then the force with which the steel ring is expanded is, (Andhra 86)
Answer
25. Question
Four wires whose lengths and diameter respectively are given below are made of the same material. Which of these will have the largest extension when same tension is applied? (MHTCET2001)
Answer