Units and Measurement MCQ Questions Class 11 Physics Chapter 2
NCERT MCQ Questions for Class 11 Physics Chapter 2 Units and Measurement. Units and Measurement MCQ Questions with Answers from Class 11 Physics.
Units and Measurement MCQ Questions Class 11 Physics Chapter 2
Units and Measurement Multiple Choice Questions with Answers Class 11 Physics Chapter 2 PDF is available.
1) The internationally accepted reference standard is called
a) Unit
b) Measurements
c) Both a and b
d) None
Ans: a) unit
2) The units for the fundamental or base quantities are called
a) Base units
b) Fundamental units
c) Both a and b
d) None
Ans: c) both a and b
3) The units which are obtained for the derived quantities are called
a) Fundamental units
b) Base units
c) Derived units
d) None
Ans: c) derived units
4) The complete set of derived units and base units is called as
a) Fundamental units
b) Base units
c) System of units
d) Nine
Ans: c) system of units
5) CGS system stands for
a) Meter, gram, second
b) Centimetres, kilogram, second
c) Centimetres, gram, second
d) None
Ans: c) centimetres, gram, second
6) MKS system stands for
a) Centimetres, gram, second
b) Meters, kilogram, second
c) Meter, gram, second
d) None
Ans: b) meters, kilogram, second
7) The system of units which is internationally accepted for measurement is called as
a) MKS system
b) CGS system
c) FPS system
d) SI system
Ans: d) SI system
8) In SI system, length is measured in
a) Centimetres
b) Meters
c) Millimetre
d) Micrometre
Ans: b) meter
9) In SI system, mass is measured in
a) Kilogram
b) Gram
c) Pound
d) None
Ans: a) kilogram
10) In SI system, ampere is the unit of
a) Charge
b) Potential
c) Electric current
d) None
Ans: c) electric current
11) In SI system, temperature is measured in
a) Kelvin
b) Fehrenite
c) Celsius
d) None
Ans: a) Kelvin
12) In SI system, amount of substance is measured in
a) Kilomole
b) Mole
c) Both a and b
d) None
Ans: b) mole
13) In SI system, luminous intensity is measured in
a) Ampere
b) Kelvin
c) Candela
d) None
Ans: c) candela
14) The large distances like distance of a planet from the earth is measured by
a) Meter scale
b) Parallax method
c) Both a and b
d) None
Ans: b) Parallax method
15) 1fermi =
a) 10-15m
b) 10-13m
c) 10-12m
d) 10-16m
Ans: a) 10-15m
16) 1 angstroms=
a) 10-8m
b) 10-9m
c) 10-10m
d) 10-15m
Ans: c) 10-10m
17) 1 astronomical unit=
a) 1.496*10-11m
b) 1.496*1011m
c) 1.496*10-12m
d) 1.496m
Ans: b) 1.496*1011m
18) 1 light year=
a) 9.46*1015m
b) 9.46*10-15m
c) 9.46m
d) 9.46km
Ans: a) 9.46*1015m
19) The mass of an atom is expressed in
a) Gram
b) Kilogram
c) Unified atomic mass unit
d) Milligrams
Ans: c) unified atomic mass unit
20) 1unified atomic mass unit =
a) 1.66*1027kg
b) 1.66*10-27g
c) 1.66*10-27kg
d) None
Ans: c) 1.66*10-27kg
21) The size of the proton is of the order of
a) 10-14m
b) 10-15m
c) 10-16m
d) 10-13m
Ans: b) 10-15m
22) Size of the atomic nucleus is of the order of
a) 10-13m
b) 10-14m
c) 10-15m
d) 10-16m
Ans: b) 10-14m
23) Size of the hydrogen atom is of the order of
a) 10-15m
b) 10-14m
c) 10-10m
d) 10-9m
Ans: c) 10-10m
24) The length of the typical virus is if the order of
a) 10-10m
b) 10-8m
c) 10-9m
d) 10-6m
Ans: b) 10-8m
25) The radius of the earth is
a) 107m
b) 108m
c) 109m
d) 1010m
Ans: a) 107m
- In case you have missed:- NCERT MCQ Questions for Waves
26) Distance of the moon from the earth is
a) 107m
b) 1010m
c) 108m
d) 109m
Ans: c) 108m
27) Distance of the sun from the earth is
a) 109m
b) 1010m
c) 10-11m
d) 1011m
Ans: d) 1011m
28) The uncertainty in the measuring instruments is called
a) Uncertainty
b) Error
c) Both a and b
d) None
Ans: b) error
29) Those errors which tends to be in one direction are called as
a) Errors
b) Systematic errors
c) Both a and b
d) None
Ans: b) systematic errors
30) The errors which arises from the errors due to imperfect design or calibration of the measuring instruments are called
a) Systematic errors
b) Instrumental errors
c) Personal errors
d) None
Ans: b) instrumental errors
31) The errors arises due to individual bias, lack of proper setting of apparatus or individuals carelessness while taking observations are called
a) Systematic errors
b) Fundamental errors
c) Personal errors
d) None
Ans: c) Personal errors
32) The errors which occurs irregularly and hence random with respect to size and sign are called
a) Systematic errors
b) Personal errors
c) Random errors
d) None
Ans: c) random errors
33) The smallest value that can be measured by the measuring instrument is called as
a) Count
b) Least count
c) Both a and b
d) None
Ans: b) least count
34) The errors associated with the resolution of the instrument is called as
a) Personal errors
b) Instrumental errors
c) Least count errors
d) None
Ans: c) least count errors
35) The magnitude of the difference between the individual measurement and the true value of the quantity is called the
a) Least count errors
b) Absolute error of the measurement
c) Both a and b
d) None
Ans: b) absolute error of the measurements
36) The arithmetic mean of all the absolute errors taken is called as
a) Average absolute error
b) Mean absolute error
c) Absolute error
d) None
Ans: b) mean absolute error
37) The ratio of the mean absolute error to the mean value of the quantity measured is called as
a) Absolute error
b) Mean absolute error
c) Relative error
d) None
Ans: c) relative error
38) When relative error is expressed in per cent then it is called as
a) Absolute error
b) Mean absolute error
c) Percentage error
d) None
Ans: c) percentage error
39) Error in case of a measured quantity
a) Raised to power
b) Not raised to power
c) Both a and b
d) None
Ans: a) raised to power
40) The reliable digits plus the first uncertain digit are known as
a) Significant digits
b) Significant figures
c) Both a and b
d) None
Ans: c) both a and b
41) If the units of the quantity are changed then it’s —– down not changes
a) Significant figures
b) Significant digits
c) Both a and b
d) None
Ans: c) both a and b
42) All the non zero digits are
a) Not significant
b) Significant
c) Both a and b
d) None
Ans: b) significant
43) All the zeroes between two non zero digits are
a) Significant
b) Not significant
c) Both a and b
d) None
Ans: a) significant
44) If the number is less than 1, the zeroes on the right of decimal point but to the left of the first non zero digit are
a) Significant
b) Not significant
c) Both a and b
d) None
Ans: b) not significant
45) The terminal or trailing zeroes in a number without a decimal point are
a) Significant
b) Not significant
c) Both a and b
d) None
Ans: b) not significant
46) The trailing zero in a number with a decimal point are
a) Significant
b) Not significant
c) Both a and b
d) None
Ans: a) significant
47) Preceding digit is raised by ___ if the insignificant digit to be dropped is more than 5, and is left unchanged if the later is less than 5.
a) 1
b) 2
c) -1
d) None
Ans: a) 1
48) If the preceding digit is even then the insignificant digit is
a) Raised by 1
b) Simply dropped
c) Both a and b
d) None
Ans: b) simply dropped
49) If the preceding digit is odd then the preceding digit is
a) Simply dropped
b) Raised by 1
c) Not raised by 1
d) None
Ans: b) raised by 1
50) An equation obtained by equating physical quantity with its dimensional formula is called
a) Dimensional formula
b) Dimensional equation
c) Both a and b
d) None
Ans: b) dimensional equation
- In case you have missed:- Next Chapter MCQ Questions