Q.

ASSERTION: In an experiment, the reliable digits plus the first uncertain digit are known as significant digits or significant figures.
REASON: A choice of change of different units does not change the number of significant digits or figures in a measurement

 

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a

ASSERTION  is true ,REASON is a correct explanation 

b

ASSERTION  is true ,REASON is not a correct explanation

c

ASSERTION  is true ,REASON is false

d

ASSERTION  is false ,REASON is true

answer is B.

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ASSERTION: In an experiment, the reliable digits plus the first uncertain digit are known as significant digits or significant figures.REASON: A choice of change of different units does not change the number of significant digits or figures in a measurement