Physical Quantities & Units.

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1. 
What unit measures a plane angle?

2. 
What is 1 Light year in metres?

3. 
What is a steradian used for?

4. 
How many fundamental units are there?

5. 
What is 1 Picosecond (ps) in seconds?

6. 
What is a vector quantity?

7. 
How much is 1 Gram (g) in kilograms?

8. 
Which unit was added later to the fundamental units?

9. 
Which quantity is a scalar?

10. 
What is 1 Astronomical unit (AU) in metres?

11. 
Which prefix represents 10⁻²¹?

12. 
What is the Chandrashekhar limit related to?

13. 
Which is an example of a derived quantity?

14. 
What is 1 Angstrom (Å) equal to?

15. 
Which quantity has a supplementary unit?

16. 
What does the prefix "giga" (G) mean?

17. 
Which is an example of a vector quantity?

18. 
What is another name for the CGS system?

19. 
Which scalar quantity is related to electricity?

20. 
What unit measures luminous intensity?

21. 
What is a scalar quantity?

22. 
What unit measures the amount of substance?

23. 
Where is the kilogram prototype kept?

24. 
Which is a supplementary quantity?

25. 
Which is an example of a derived unit?

26. 
Which prefix means 10⁻¹²?

27. 
How many light years is 1 Parsec?

28. 
Which is an example of a scalar quantity?

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