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(A) : Brakes of very small contact area ...

(A) : Brakes of very small contact area are not used although friction is independent of area of contact
( R) : Friction resists relative motion

A

Both (A) and (R) are true and (R) is the correct explanation of (A)

B

Both (A) and (R) are true and (R) is not the

C

(A) is true but ( R) is false

D

Both (A) and (R ) are false

Text Solution

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The correct Answer is:
B
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