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Units and Measurement
Question
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Under what conditions the zeros are not significant?

Answer

The conditions under which zeroes are non-significant are:
(i) When the first non-zero digit occurs after decimal, then all the zeros between decimal and first non-zero digit are non-significant.

(ii) The zeros occurring on the extreme right in a whole number are not significant.

 

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Some More Questions From Units and Measurement Chapter

What is measurement?

What is the need of measurement?

Define physical quantity.

 

Give four examples of physical quantities.

Define unit.

What are the two main required characteristics of a unit?

Can we use same units for different physical quantities?

Can we use different units to measure same physical quantity?

To measure a physical quantity X, the unit U is repeatedly used for n times. What is the magnitude of physical quantity?

Does the numerical factor in the quantitative measurement depend on the system of unit used?