Physical Quantities and Measurement

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1. Which of the following is a base unit?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

6. The numbers having one significant digit is:

 
 
 
 

7. Micrometer can be used to measure:

 
 
 
 

8. Ratio of millimetre to micrometre is:

 
 
 
 

9. 0.2 mm in units of meters is:

 
 
 
 

10. Which of following prefix represents a largest value?

 
 
 
 

11. 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:

 
 
 
 

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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