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Q.

Write Question Image correct to Question Image significant figures.


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a

 Question Image

b

 Question Image

c

0.0047 

d

 Question Image

answer is A.

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Detailed Solution

Concept: Given number, Question Image
Using the rule to calculate the significant figures,
Here, the Question Image preceding a non-zero digit is not significant.
As a result, the Question Image following the decimal point is meaningless in this case.
So, the next Question Image non-zero numbers are the two significant figures, and we have Question Image here because Question Image.
The round off of Question Image is Question Image
So the number can be written as Question ImageHence, the correct answer is option (1) .
 
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