Physical Quantities and Measurement

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

 
 
 
 

2. The number of significant figures in 0.00650 s are:

 
 
 
 

3. The numbers having one significant digit is:

 
 
 
 

4. Which one of the following unit is not a derived unit?

 
 
 
 

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

 
 
 
 

6. Which of the following is a base unit?

 
 
 
 

7. Which of the following numbers show 4 significant digits?

 
 
 
 

8. Micrometer can be used to measure:

 
 
 
 

9. Ratio of millimetre to micrometre is:

 
 
 
 

10. Which of following prefix represents a largest value?

 
 
 
 

11. 0.2 mm in units of meters is:

 
 
 
 

12. 9.483 x 10³ m is the standard form of:

 
 
 
 

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

 
 
 
 

Question 1 of 13

 

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