A) I
B) II
C) III
D) IV
Correct Answer: B
Solution :
In the case of a nail being pushed into a wall, the area of contact is very small. Therefore, a huge pressure is required to push the nail into the wall. Atmospheric pressure can never be so high that it is able to push a nail into a wall. Therefore, atmospheric pressure does not play any role in action II. The correct answer is B.You need to login to perform this action.
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