Physical Quantities and Measurement

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1. 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:

 
 
 
 

2. Micrometer can be used to measure:

 
 
 
 

3. Ratio of millimetre to micrometre is:

 
 
 
 

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

 
 
 
 

5. The numbers having one significant digit is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

8. 9.483 x 10³ m is the standard form of:

 
 
 
 

9. Which of following prefix represents a largest value?

 
 
 
 

10. 0.2 mm in units of meters is:

 
 
 
 

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

 
 
 
 

12. Which of the following is a base unit?

 
 
 
 

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

 
 
 
 

Question 1 of 13

 

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