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Q.

Thickness of a paper is 0.07 mm. The standard form of this thickness in mm is ____.


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Detailed Solution

Thickness of a paper is 0.07 mm. The standard form of this thickness in mm is 7× 10 −2  mm.  
Given that,
Thickness of a paper = 0.07 mm.
We know standard form is a way of representing a number as a product of decimal numbers and powers of 10.
The number 0.07 contains 1 zero after decimal point and is less than 1.
So, the power is negative in nature.
If we include the first non-zero digit after the decimal point, then the power of 10 will be -2.
So, 0.07=7× 10 −2  .
Therefore, the thickness in standard form is 7× 10 −2  mm  .   
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