Physical Quantities and Measurement

Which of the following is a base unit?

 
 
 
 

0.2 mm in units of meters is:

 
 
 
 

The ratio of millimeter to micrometer is:

 
 
 
 

9.483 × 10³ m is the standard form of:

 
 
 
 

Which of the following numbers shows 4 significant digits?

 
 
 
 

The instrument that best measures the internal diameter of a pipe is:

 
 
 
 

The least count of a screw gauge is 0.01 mm. If the main scale reading of the screw gauge is zero and the third line of its circular scale coincides with the datum line, then the measurement on the screw gauge is:

 
 
 
 

Which of the following prefixes represents the largest value?

 
 
 
 

The number of significant figures in 0.00650 s is:

 
 
 
 

Which one of the following units is not a derived unit?

 
 
 
 

Amount of a substance in terms of numbers is measured in:

 
 
 
 

A micrometer can be used to measure:

 
 
 
 

The number having one significant digit is:

 
 
 
 

Question 1 of 13

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