MCQS of Physics 1st Year Chapter 1
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Physics 1st year chapter 1 MEASUREMENTS
1. The branch of physics which deals with the ultimate particles of which the matter is composed is:a) Plasma physics
b) Atomic physics
c) Nuclear physics
d) Particle physics
2. The branch of physics which deals with atomic nuclei is called
a) Acoustics
b) Thermodynamics
c) Magnetism
d) Nuclear physics
3. Silicon is abundantly obtained from:
a) Water
b) Metal
c) Sand
d) Stones
4. The number of base units are:
a) Three
b) Five
c) Seven
d) Nine
5. Which of the following is a derived quantity:
a) Force
b) Mass
c) Length
d) Time
6. Which of the following is SI base unit?
a) gram
b) slug
c) Newton
d) kilogram
7. Which one of the following is not a unit of length:
a) Angstrom
b) Micron
c) Radian
d) Light year
8. Which is not a base unit in SI units?
a) Kilogram
b) Joule
c) Ampere
d) Kelvin
9. An example of derived unit is
a) Candela
b) Ampere
c) Coulomb
d) Mole
10. Candela is the SI unit of
a) Charge
b) Luminous intensity
c) Power
d) Refractive index
11. An alternate unit to kgms^-1 is
a) Js
b) Ns
c) Nm
d) N
12. The SI units of pressure in terms of base units are
13. The SI unit of plane angle is
a) Steradian
b) Radian
c) Degree
d) Candela
14. Steradian is the angel which lies in:
a) One dimension
b) Two dimensions
c) Three dimensions
d) None
15. The SI unit of the solid angle is
a) Degree
b) Steradian
c) Revolution
d) Radian
16. The solid angle subtended at the center of sphere by an area of its surface equal to the square of radius of the sphere is called:
a) Degree
b) Radian
c) Minute
d) Steradian
17. SI unit of pressure is
18. Which is a derived unit:
a) Candela
b) Ampere
c) Kelvin
d) Newton
19. The unit of force is________ and its symbol is _______ which is the correct pair?
a) Newton, n
b) Newton, N
c) newton, n
d) newton, N
20. Which one is the correct representation of the unit of pressure?
a) Newton/Meter2
b) newton/meter2
c) Newton/meter2
d) Newton/Meter2
21. Which of the following is least multiple:
a) Pico
b) Femto
c) Nano
d) Atto
22. Which one is the highest power multiple?
a) giga
b) mega
c) kilo
d) deca
23. The prefix pico is equal to
24. The SI unit of intensity of light is:
a) Mole
b) Kelvin
c) Candela
d) Ampere
27. Error occurs due to negligence and inexperience of a person is:
a) Systematic Error
b) Random Error
c) Personal Error
d) None
28. Error in measurement may occur due to
a) Inexperience of a person
b) The faulty apparatus
c) Inappropriate method
d) Due to all reasons in a, b and c
29. In any measurement the significant figures are
a) All accurately known and all doubtful digits
b) Only accurately known digits
c) Only doubtful digits
d) All accurately know digits and the first doubtful digit
30. Number of significant figures in 0.0173 are:
a) Three
b) Four
c) Five
d) Two
a) Pico
b) Femto
c) Nano
d) Atto
22. Which one is the highest power multiple?
a) giga
b) mega
c) kilo
d) deca
23. The prefix pico is equal to
a) Mole
b) Kelvin
c) Candela
d) Ampere
a) Systematic Error
b) Random Error
c) Personal Error
d) None
28. Error in measurement may occur due to
a) Inexperience of a person
b) The faulty apparatus
c) Inappropriate method
d) Due to all reasons in a, b and c
29. In any measurement the significant figures are
a) All accurately known and all doubtful digits
b) Only accurately known digits
c) Only doubtful digits
d) All accurately know digits and the first doubtful digit
30. Number of significant figures in 0.0173 are:
a) Three
b) Four
c) Five
d) Two
31. A student added three figures 72.1, 3.32 and 0.003. The correct answer regarding the rules of the addition of the significant figures will be
a) 75.423
b) 75.42
c) 75.4
d) 75
32. If the reading is taken with measuring scale whose minimum division is 1mm, then the correct reading is:
a) 0.2145 m
b) 0.21 m
c) 0.214 m
d) None
33. 75.560 is round off as:
a) 75.6
b) 75.7
c) 76.00
d) None
34. Zero to the right of non-zero digits are:
a) Significant
b) Not significant
c) May or may not be significant
d) None
35. What is the number of significant figures in the measurement recorded as 8.70 × 10 ^4 ?
a) 1
b) 3
c) 4
d) 7
36. Zero is not significant only if it
a) Lies to the left of a significant digit
b) is between two digits
c) is to the right of a significant digit
d) is before the decimal point
37. Significant figures in 0.000846 are
a) Six
b) Four
c) Seven
d) Three
38. The sum of the three numbers, 2.7543, 4.10 and 1.273, up to correct decimal places is
a) 8.1
b) 8.13
c) 8.1273
d) 8.127
39. 73.650 rounded off up to one decimal is
a) 73.6
b) 73.7
c) 74.00
d) 73.65
40. Absolute uncertainties are added in following operations:
a) Multiplication
b) Division
c) Subtraction
d) None
41. An accurate measurement is one which has less
a) Precision
b) Absolute uncertainty
c) Fractional uncertainity
d) None
43. Smaller is the least count of the instrument, more is the measurement:
a) Accurate
b) Precise
c) Accurate and precise
d) None of these
44. Which is a correct record for the diameter of wire when measured my a screw gauge of least count 0.001 cm:
a) 2.3 cm
b) 2.31 cm
c) 2.312 cm
d) 2.3124 cm
45. Which one of the following is not regarded as a fundamental quantity in Physics?
a) Length
b) Mass
c) Time
d) Weight
54. A light year is a unit for
a) Time
b) Distance
c) Velocity
d) Time period
Answer Key
MCQs of Physics 1st year chapter 8
MCQs of Physics 1st year chapter 9
MCQs of Physics 1st year chapter 10
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