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Significant Figures

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2 weeks ago

Significant Figures Class 11th

In which of the following numerical values, all zeroes are significant?
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A
alok kumar singh

Contributor-Level 10

In a number without decimal, trailing zeros are insignificant. If a number has a decimal, then preceding zeros are insignificant.

Hence, in 40.40 all zeros are significant

New answer posted

2 weeks ago

Significant Figures Class 11th

Two rods with lengths 20.123 cm and 18.1 cm are placed side by side. The difference in their lengths is
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R
Raj Pandey

Contributor-Level 9

(b)  L1=  Length of rod =20.123cm

L2=  Length of rod = 18.1cm

Difference in length  

= 20.123-18.1

 =2.0 cm

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