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#### Chapter one creative three mark questions with solutions

11th Standard

Reg.No. :
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Physics

Time : 00:40:00 Hrs
Total Marks : 45

Part A

15 x 3 = 45
1. Give any three applications of physics in our society.

2. What are fundamental units and derived units?

3. Name the SI unit for Luminous intensity and give a definition for it.

4. Give the values for the following units with prefixes.
(i) 1 Megaohm
(ii) 1 milliampere
(iii) 1deca gram
(iv) 1nano second
(v) 1 microvolt
(vi) 1 centimetre

5. What are the advantages of the SI system?

6. What is Gross Error & How can it be minimised.

7. Does AU and $\mathring{A}$ represent the same unit of length?

8. Explain unification with example.

9. How are theoretical predictions useful?

10. Write the role of physics in technology.

11. What is the relation of physics to biology?

12. How can the systematic errors be minimised?

13. In a physical units, how many units are there in 1 metre?
1 Astronomical unit (AU = 1.496 x 1011 m
Given data:
1 AU = 1.496 x 1011m
1 ly = 9.467 x 1015m
1 mm = 10-6m
1 parsec = 3.08 x 1016m

14. In a physical units, how many units are there in 1 metre?
1 light year = 9.467 x 1015m
Given data:
1 AU = 1.496 x 1011m
1 ly = 9.467 x 1015m
1 mm = 10-6m
1 parsec = 3.08 x 1016m

15. In a physical units, how many units are there in 1 metre?
1 micron ($\mu$) = 10-6 m
Given data:
1 AU = 1.496 x 1011m
1 ly = 9.467 x 1015m
1 mm = 10-6m
1 parsec = 3.08 x 1016m