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Solution


Q.

Given below are two statements one is labeled as Assertion (A) and other is labeled as Reason (R)

Assertion (A): When a block is placed in a lift which is accelerating upwards then the body experiences the following three forces

(A) Weight (Mg)
(B) Normal reaction (N) and
(C) Pseudo force (Ma) if ‘a’ is acceleration of lift

Reason (R): Pseudo force is applied on a body only when the body is seen from an accelerated observer.

In the light of the above statements, choose the most appropriate answer from the options given below:
1 Both (A) and (R) are correct and (R) is the correct explanation of (A)  
2 Both (A) and (R) are correct and (R) is not the correct explanation of (A)  
3 (A) is correct but (R) is not correct  
4 (A) is not correct but (R) is correct  

Ans.

(4)

Pseudo force is applied on a body only when the body is seen from an accelerated Observer