ANSWER THE FOLLOWING QUESTIONS.
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1.
(a) Friction opposes the motion between the surfaces in contact with each other.
(b) Friction depends on the irregularities of surfaces.
(c) Friction produces heat.
(d) A sprinkling of powder on the carrom board reduces friction.
(e) Sliding friction is lesser than the static friction.
2. (c) static, sliding, rolling
3.(a)wet marble floor, dry marble floor, newspaper, towel.
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