Question

In which of the following cases is friction reduced and in which is friction increased?
(iii) Using oil on door hinges
(ii) Carom board
(iv) Lightning a matchstick
(i) Car tyres​

Answer 1

Answer:

(iii) is the example of reduced friction

(ii)(iv)(I) is the example of increased friction

Explanation:

oil helps in reducing friction in other activities there is no agent which helps in reducing friction so other are the example of increased friction