All MCQs in the chapter 1 (Units and Measurements) are given:
Topics Covered:
- Fundamental units/ base units.
- Dimension of physical quantity and Dimension formula
- Errors
1. _______ is a standard in which a physical quantity is measured.
A] Symbol
B] Formula
C] Unit
D] Dimension
2. The measurement of ______ is explored by a number accompanied by a unit.
A] Physical Quantity
B] Physical Dimension
C] Unit
D] Dimension
3. The units of fundamental quantities are called _______
A] Physical Unit
B] Physical Dimension
C] Fundamental Unit
D] None of these
4. There are ______ base/ fundamental quantities.
A] 8
B] 7
C] 10
D] 6
5. Which of the following is the fundamental unit of lenght ?
A] Ampere
B] Second
C] Kilogram
D] Metre
6. What is the fundamental unit of mass ?
A] Second
B] Kilogram
C] Metre
D] Ampere
7. Which symbol is used to represent metre ?
A] cd
B] me
C] m
D] mt
8. ______ is the fundamental unit of time.
A] second
B] kelvin
C] metre
D] mole
9. What is the fundamental unit of electric current ?
A] metre
B] mole
C] ampere
D] candela
10. Which of the following is the fundamental unit of absolute temperature ?
A] celsius
B] mole
C] kelvin
D] candela
11. candela is the fundamental unit of _______
A] Density
B] Mass
C] Velocity
D] Luminous Intensity
12. _______ is the fundamental unit of amount of substance.
A] kelvin
B] ampere
C] mole
D] kilogram
13. Which symbol is used to represent candela ?
A] cd
B] can
C] c
D] cn
14. Which symbol is used to represent electric current ?
A] EC
B] A
C] a
D] cu
15. Which symbol is used to represent mole ?
A] m
B] mole
C] mo
D] mol
16. ______ of the following is the fundamental quantity?
A] Meter
B] length
C] force
D] speed
17. The units of derived quantities are called as _______
A] Physical units
B] Fundamental units
C] Derived units
D] All of these
18. What is the derived unit of volume ?
A] Cubic meter
B] Meter
C] Square meter
D] None of these
19. What is the derived unit of density ?
A] Kg/m
B] m2
C] Kg/m2
D] Kg/m3
20. ________ is the derived unit of acceleration
A] Kg/m2
B] m/s2
C] Kg/m
D] Kg/m3
21. Which of the following is the derived unit of force ?
A] Kg/m2
B] Kg m/s
C] Kg/m
D] Kg m/s2
22. The derived unit of momentum is _______
A] Kg m/s
B] Kg/m2
C] Kg/m
D] Kg/m3
23. What is the derived unit of potential difference
A] kg m2/s2
B] A s
C] kg m2/A s3
D] Kg/m2
24. ________ is the derived unit of resistance.
A] Kg m3/s2
B] kg m2/A2
C] Kg m2/A s3
D] Kg/m3
25. Which of the following is the derived unit of pressure and thrust ?
A] Kg/m3
B] Kg m/s
C] Kg/m
D] Kg /m s2
26. ______ is not a system of units.
A] C.G.S
B] M.K.S
C] C.I.S
D] S.I
27. C.G.S. system means______
A] centimeter, gravity, second
B] centimeter, gram, second
C] centimeter, gram, service
D] none of these
28. The ________ systems of units are now accepted worldwide for measurement.
A] C.G.S
B] M.K.S
C] C.I.S
D] S.I
29. What is the dimensional formula of volume ?
A] L3 M0 T0
B] L2 M1 T0
C] L-1 M0 T3
D] L-3 M1 T-2
30. _______ is correct dimension of density.
A] L-1 M1 T0
B] L-3 M1 T0
C] L-1 M1 T3
D] L-3 M1 T0
31. Multiples and Submultiples represents a multiplication factor in terms of a certain power of ______
A] 6
B] 8
C] 10
D] 12
32. The result of every measurement by a measuring instrument contains some uncertainty. This uncertainty is called as ______
A] Error
B] Accuracy
C] Systematic errors
D] None of these
33. The errors are classified as ______
A] Instrumental
B] Systematic
C] Random
D] All of these
34. Which errors arise due to imperfection in experiment technique or procedure ?
A] Instrumental
B] Systematic
C] Random
D] All of these
35. Which error arise due to imperfect design or calibration of measuring instrument ?
A] Instrumental
B] Systematic
C] Random
D] All of these
36. Which error occur due to unpredictable, change in experimental conditions ?
A] Instrumental
B] Systematic
C] Random
D] All of these
37. There are_____ significant figure in 0.26x102 m.
A] 4
B] 5
C] 3
D] 2
38. The magnitude of difference between the individual measurement and true of the quantity is called as ________
A] Relative error
B] Absolute error
C] Instrumental error
D] Systematic error
39. The relative error expressed in percent is called as ________
A] Percentage error
B] Absolute error
C] Instrumental error
D] Systematic error
40. Find percentage error in measuring the density of wood cube. When the mass of the mass of the block is 50 ± 0.1g , and the length of the cube is 2 ± 0.01cm.
A] 2.3%
B] 1.9%
C] 1.7%
D] 1.5%
A] Symbol
B] Formula
C] Unit
D] Dimension
Answer: C] Unit
2. The measurement of ______ is explored by a number accompanied by a unit.
A] Physical Quantity
B] Physical Dimension
C] Unit
D] Dimension
Answer: A] Physical Quantity
3. The units of fundamental quantities are called _______
A] Physical Unit
B] Physical Dimension
C] Fundamental Unit
D] None of these
Answer: C] Fundamental Unit
4. There are ______ base/ fundamental quantities.
A] 8
B] 7
C] 10
D] 6
Answer: B] 7
5. Which of the following is the fundamental unit of lenght ?
A] Ampere
B] Second
C] Kilogram
D] Metre
Answer: D] Metre
6. What is the fundamental unit of mass ?
A] Second
B] Kilogram
C] Metre
D] Ampere
Answer: B] Kilogram
7. Which symbol is used to represent metre ?
A] cd
B] me
C] m
D] mt
Answer: C] m
8. ______ is the fundamental unit of time.
A] second
B] kelvin
C] metre
D] mole
Answer: A] second
9. What is the fundamental unit of electric current ?
A] metre
B] mole
C] ampere
D] candela
Answer: C] ampere
10. Which of the following is the fundamental unit of absolute temperature ?
A] celsius
B] mole
C] kelvin
D] candela
Answer: C] kelvin
11. candela is the fundamental unit of _______
A] Density
B] Mass
C] Velocity
D] Luminous Intensity
Answer: D] Luminous Intensity
12. _______ is the fundamental unit of amount of substance.
A] kelvin
B] ampere
C] mole
D] kilogram
Answer: C] mole
13. Which symbol is used to represent candela ?
A] cd
B] can
C] c
D] cn
Answer: A] cd
14. Which symbol is used to represent electric current ?
A] EC
B] A
C] a
D] cu
Answer: B] A
15. Which symbol is used to represent mole ?
A] m
B] mole
C] mo
D] mol
Answer: D] mol
16. ______ of the following is the fundamental quantity?
A] Meter
B] length
C] force
D] speed
Answer: B] length
17. The units of derived quantities are called as _______
A] Physical units
B] Fundamental units
C] Derived units
D] All of these
Answer: C] Derived units
18. What is the derived unit of volume ?
A] Cubic meter
B] Meter
C] Square meter
D] None of these
Answer: A] Cubic meter
19. What is the derived unit of density ?
A] Kg/m
B] m2
C] Kg/m2
D] Kg/m3
Answer: D] Kg/m3
20. ________ is the derived unit of acceleration
A] Kg/m2
B] m/s2
C] Kg/m
D] Kg/m3
Answer: B] m/s2
21. Which of the following is the derived unit of force ?
A] Kg/m2
B] Kg m/s
C] Kg/m
D] Kg m/s2
Answer: D] Kg m/s2
22. The derived unit of momentum is _______
A] Kg m/s
B] Kg/m2
C] Kg/m
D] Kg/m3
Answer: A] Kg m/s
23. What is the derived unit of potential difference
A] kg m2/s2
B] A s
C] kg m2/A s3
D] Kg/m2
Answer: C] kg m2/A s3
24. ________ is the derived unit of resistance.
A] Kg m3/s2
B] kg m2/A2
C] Kg m2/A s3
D] Kg/m3
Answer:
B] kg m2/A2 s3
25. Which of the following is the derived unit of pressure and thrust ?
A] Kg/m3
B] Kg m/s
C] Kg/m
D] Kg /m s2
Answer: D] Kg / m s2
26. ______ is not a system of units.
A] C.G.S
B] M.K.S
C] C.I.S
D] S.I
Answer: C] C.I.S
27. C.G.S. system means______
A] centimeter, gravity, second
B] centimeter, gram, second
C] centimeter, gram, service
D] none of these
Answer: B] centimeter, gram, second
28. The ________ systems of units are now accepted worldwide for measurement.
A] C.G.S
B] M.K.S
C] C.I.S
D] S.I
Answer: D] S.I
29. What is the dimensional formula of volume ?
A] L3 M0 T0
B] L2 M1 T0
C] L-1 M0 T3
D] L-3 M1 T-2
Answer: A] L3 M0 T0
30. _______ is correct dimension of density.
A] L-1 M1 T0
B] L-3 M1 T0
C] L-1 M1 T3
D] L-3 M1 T0
Answer: D] L-3 M1 T0
31. Multiples and Submultiples represents a multiplication factor in terms of a certain power of ______
A] 6
B] 8
C] 10
D] 12
Answer: C] 10
32. The result of every measurement by a measuring instrument contains some uncertainty. This uncertainty is called as ______
A] Error
B] Accuracy
C] Systematic errors
D] None of these
Answer: A] Error
33. The errors are classified as ______
A] Instrumental
B] Systematic
C] Random
D] All of these
Answer: D] All of these
34. Which errors arise due to imperfection in experiment technique or procedure ?
A] Instrumental
B] Systematic
C] Random
D] All of these
Answer: B] Systematic
35. Which error arise due to imperfect design or calibration of measuring instrument ?
A] Instrumental
B] Systematic
C] Random
D] All of these
Answer: A] Instrumental
36. Which error occur due to unpredictable, change in experimental conditions ?
A] Instrumental
B] Systematic
C] Random
D] All of these
Answer: C] Random
37. There are_____ significant figure in 0.26x102 m.
A] 4
B] 5
C] 3
D] 2
Answer: D] 2
38. The magnitude of difference between the individual measurement and true of the quantity is called as ________
A] Relative error
B] Absolute error
C] Instrumental error
D] Systematic error
Answer: B] Absolute error
39. The relative error expressed in percent is called as ________
A] Percentage error
B] Absolute error
C] Instrumental error
D] Systematic error
Answer: A] Percentage error
40. Find percentage error in measuring the density of wood cube. When the mass of the mass of the block is 50 ± 0.1g , and the length of the cube is 2 ± 0.01cm.
A] 2.3%
B] 1.9%
C] 1.7%
D] 1.5%
Answer: C] 1.7%
 MCQs - Chapter 1: Units and Measurements (Physics) MCQs |MSBTE I Scheme ){kind=link}
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