While discussing about friction, a teacher gave a number of examples to explain the concept. Some of the examples where friction is useful in our day-to day life as quoted by the teacher are given below (CTET Nov 2012) |
I. We are able to write because of friction between the tip of the pen and the paper. |
II. We are able to walk because of friction between our feet and the ground. |
III. A ball thrown vertically upwards comes back to us due to friction. |
IV. We are able to stop a moving vehicle by applying brakes because of friction. |
Which of the statements given above are correct? |
A) III, IV and I
B) IV, I and II
C) I, II and IV
D) II, III and VI
Correct Answer: B
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