JEE Main Physics question

Physics Laws of Motion JEE Main

**Statement I:** Use of ball bearings between two moving parts of a machine is a common practice. **Statement II:** Ball bearings reduce vibrations and provide good stability.

(A)Statement I is true, Statement II is true; Statement II is a correct explanation for Statement I
(B)Statement I is true, Statement II is true; Statement II is not a correct explanation for Statement I
(C)Statement I is true, Statement II is falseCorrect
(D)Statement I is false, Statement II is true

Answer: (C)

Solution

Ball bearings are indeed very commonly used between moving machine parts (Statement I true). However, their primary purpose is to replace high sliding friction with

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Question ID VK-153514