Friction (CBSE Class-8 Science): Questions 16 - 17 of 17

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Question number: 16

» Friction » Increasing and Reducing Friction » Wheels Reduce Friction

MCQ▾

Question

Trading of tyre is done:

Choices

Choice (4) Response

a.

Has no effect on friction

b.

To Increase the friction

c.

To Decrease the friction

d.

Question does not provide sufficient data or is vague

Question number: 17

» Friction » Friction- a Necessary Evil » Disadvantages of Friction

MCQ▾

Question

Friction:

Choices

Choice (4) Response

a.

Increases the efficiency of machine

b.

Friction is an evil

c.

Has no effect on the efficiency of machine

d.

Decreases the efficiency of machine

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