Q1Multiple choice
Whenever the surfaces in contact tend to move or move with respect to each other, the force of friction comes into play
This question refers to a figure in the original PDF.
- (a)only if the objects are solid.
- (b)only if one of the two objects is liquid.
- (c)only if one of the two objects is gaseous.
- (d)irrespective of whether the objects are solid, liquid or gaseous. 2. Fig. 12.1 In Fig.12.1, a boy is shown pushing the box from right to left. The force of friction will act on the box (a) from right to left () (c) vertically downwards () (b) from left to right () (d) vertically upwards ()
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(d) irrespective of whether the objects are solid, liquid or gaseous. 2. Fig. 12.1 In Fig.12.1, a boy is shown pushing the box from right to left. The force of friction will act on the box (a) from right to left () (c) vertically downwards () (b) from left to right () (d) vertically upwards ()