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Units And Measurement

Question
CBSEENPH11019864
Wired Faculty App

Fill in the blanks: 

a) The volume of a cube of side 1 cm is equal to .....m3

Solution

10-6 

1 cm = 1 space cm space equals space 1 over 100 space straight m So comma space volume space of space the space cube space equals space 1 space cm cubed space straight i. straight e. comma space 1 space cm cubed space equals space open parentheses 1 over 100 close parentheses cross times space open parentheses 1 over 100 close parentheses cross times space open parentheses 1 over 100 close parentheses space straight m space therefore space 1 space cm cubed space equals space 10 to the power of negative 6 end exponent space straight m cubed So space volume space of space straight a space cube space of space side space 1 space cm is space equal space to space 10 to the power of negative 6 end exponent space cm cubed.

Some More Questions From Units and Measurement Chapter

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?

Is one unit sufficient to measure a physical quantity?

Can a physical quantity have two or more units? Give example.

What are fundamental quantities?

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