Question

STATEMENT-1: It is easier to pull a heavy object than to push it on a level ground and
STATEMENT-2: The magnitude of frictional force depends on the nature of the two surfaces in contact.
A. (a) Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1
B. (b) Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explaination for Statement-1
C. (c) Statement-1 is True, Statement-2 is False
D. (d) Statement-1 is False, Statement-2 is True.

Answer 1

Correct Answer - B
It is easier to pull a heavy object than to push it on a level ground. Statement-1 is true. This is because the normal reaction in the case of pulling is less as compared by pushing. `(f=muN)`. Therefore the frictional force is small in case of pulling.
Statement-2 is true but is not the correct explanation of statement-1.