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Q.1 Fill in the blanks.
(a) Friction opposes the ______ between the surfaces in contact with each other.
(b) Friction depends on the ______ of surfaces.
(c) Friction produces ______
(d) The sprinkling of powder on the carrom board _______ friction.
(e) Sliding friction is _______ than the static friction.
Answer :

(a) Friction opposes the __motion__ between the surfaces in contact with each other.
(b) Friction depends on the __nature__ of surfaces.
(c) Friction produces __heat__.
(d) Sprinkling of powder on the carrom board __reduces__friction.
(e) Sliding friction is __lesser__ than the static friction