IIT JEE Questions And Answers :: Elasticity: part1



IIT JEE : Elasticity QUESTIONS AND ANSWERS :: part1 : 16 to 20

Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :

16.When the intermolecular distance decreases due to compressive force, there is:

zero resultant force between molecules
repulsive force between molecules
attractive force between molecules
no force between molecules

17.A string 1 mm in diameter breaks if the tension in it exceeds 80 N. The maximum tension that may be given to a similar string of diameter 2 mm is

40 N
80 N
320 N
1640 N

18.A wire elongates by l mm when a load w is hanged from it. If the wire goes over a pulley and two weights w each are hung at the two ends, the elongation of the wire will be (in mm):

l
2l
zero
l/2

19.A wire can sustain a weight of 10 kg before breaking. If the wire is cut into two equal parts, then each part can sustain a weight of

2.5 kg
5 kg
10 kg
15 kg

20.The length of an elastic string is a metre when the tension is 4 N, and b metre when the tension is 5 N. The length in metres when the tension is 9 N, is:

4a � 5b
5b � 4a
9b � 9a
a + b

More Elasticity QUESTIONS AND ANSWERS available in next pages

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