Physical Quantities & Units.

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1. 
What is a steradian used for?

2. 
What unit measures luminous intensity?

3. 
What is 1 Picosecond (ps) in seconds?

4. 
How many light years is 1 Parsec?

5. 
Which scalar quantity is related to electricity?

6. 
Which is an example of a scalar quantity?

7. 
Which is an example of a derived unit?

8. 
Which prefix represents 10⁻²¹?

9. 
What is a vector quantity?

10. 
What is a scalar quantity?

11. 
What is 1 Astronomical unit (AU) in metres?

12. 
What is another name for the CGS system?

13. 
Which quantity is a scalar?

14. 
What is 1 Angstrom (Å) equal to?

15. 
Which unit was added later to the fundamental units?

16. 
Which is a supplementary quantity?

17. 
What does the prefix "giga" (G) mean?

18. 
What unit measures the amount of substance?

19. 
Where is the kilogram prototype kept?

20. 
Which is an example of a vector quantity?

21. 
What is the Chandrashekhar limit related to?

22. 
Which quantity has a supplementary unit?

23. 
How many fundamental units are there?

24. 
What is 1 Light year in metres?

25. 
Which prefix means 10⁻¹²?

26. 
How much is 1 Gram (g) in kilograms?

27. 
What unit measures a plane angle?

28. 
Which is an example of a derived quantity?

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