Measurements Physics MCQs
Multiple choice questions
1.)The full form of “SI” unit is
a) Symbol international.
b) Symmetric intercommunication
c) System international.
d) Systematic intermesurment
Ans : c) System international
2.) The base unit for force can be expressed as,
a) kgms-2
b) kgsm-2
c) kgm-1s-1.
d) kgm2s-1
Ans : a) kgms-2
3.) Js can be expressed as
a) kgm-2s-3.
b) kgm2s-2
c) kgm2s-3
d) kgm2s3
Ans : c) kgm2s-3
4.) Nm-2 can be expressed as
a)kgms-2.
b) kgm-1s-2
c) kgm-1s2.
d) kgms-3
Ans : b) kgm-1s-2
5.) Numbers are expressed in standard form is called
a) Standard notation.
b) Scientific notation
c) Derived notation.
d) Basic notation
Ans : b) Scientific notation
6.) The number 273528.7 can be expressed in scientific notation as
a) 27.35287×10⁴.
b) 2.735287×10⁴
c) 273.5287×10⁴.
d) 0.2735287×10⁴
Ans : a) 27.35287×10⁴
7.) The number 0.0012 can be expressed in scientific notation as
a)12×10⁴.
b)1.2×10⁴
c) 0.12×10⁴.
d) 120×10⁴
Ans : a) 12×10⁴
8.) The number 7×10³ cm can be expressed as
a)7×10-1 m.
b) 70×10-1 m
c) 70 m.
d) 70m²
Ans : c) 70 m
9.) The number 7.5 pm can be written as
a)7.5×10¹²m.
b)7.5×10–¹²m
c) 7.5×10–⁹m.
d)7.5×10⁹m
Ans : b) 7.5×10–¹²m
10.) 8.9 am can be written as
a) 8.9×10¹⁵m.
b) 8.9×10–¹⁵m
c) 8.9×10-18
d) 8.9×10–¹²m
Ans : c) 8.9×10–¹⁸m
11.) 15 Em can be written as
a) 15×10¹⁸m.
b) 15×10¹⁶m
c) 15×10¹²m.
d) 15×10–⁹m
Ans : a) 15×10¹⁸m
12.) 17×10⁹m can be written as
a) 17 Gm.
b) 17 Pm
c) 17μ.
d) 17 km
Ans : a)17 Gm
13.) An error which occur when repeated measurements of the quantity give different values under the same condition, then it is called
a) Random error.
b) Systematic error
c) Symmetric error.
d) Scalar error
Ans : a) Random error
14.) In any measurement, the accurately know digits and the first doubtful digit are called
a) Random error.
b) System international
c) Significant figures.
d) Base unit
Ans : c) Significant figures
15.) Dimensions of speed can be expressed as
a) Dimension of length / Dimension of distance
b) Dimension of length / Dimension of time
c) Dimension of distance / Dimension of length
d) Dimension of velocity / Dimension of length
Ans : c) Dimension of length / Dimension of time
16.) The dimensions of acceleration can be expressed as, [a] = _______
a) [LM-1].
b) [LT-2]
c) [LT-1].
d) [MLT-2]
Ans : b) [LT-2]
17.) The dimensions of force can be expressed as, [F] = _____
a)[LM-1].
b) [LT-2]
c) [MLT-1].
d) [MLT-2]
Ans : d) [MLT-2]
18.) 0.00732 m can be expressed as
a)73.2 cm
b) 732μm
c) 7.32 mm
d) 0.732 mm
Ans : c) 7.32 mm
19.) 2 km² can be expressed as
a)2km²
b) 2Mm²
c) 2Gm²
d) 2Em²
Ans : b) 2Mm²
20.) 2.5 μm² can be expressed as
a)2.5 fm²
b) 2.5 nm²
c) 2.5 pm²
d) 2.5 cm²
Ans : c) 2.5 pm²
21.) Fill in the blank
The _______ is the plane angle between two radii of a circle which cut off on the circumference an arc , equal to length to the radius.
a) tangent.
b) length of the radius
c) arc.
d) radian
Ans : d) radian
22.) Pressure can be expressed in terms of base units as
a) kgm-1s2
b) kgm-1s-2
c) kgm-2s-1.
d) kgm-1s-1
Ans : b)kgm-1s-2
23.) Electric charge can be expressed in terms of base units
a) As
b) Ns
c) kgs
d) Js
Ans : a) As
24.) One watt can be expressed in terms of base unit, is
a) kgm²s-3
b)kg-1m-1s-1
c) kgm².
d) kgm-1s-1
Ans : a) kgm²s-3
25.) One Pascal can be expressed as
a)Nm-2
b) Nm²
c) Nm-1s-1
d) Nms-1
Ans : a) Nm-2
26.) Newton × metre can be expressed as
a) kgm2s-2
b) kgm-2s-2
c) kgm-1s-1
d) kgms-1
Ans : a) kgm2s-2
27.) 7.3×10⁶ μm can be written as
a) 7.3 pm
b) 7.3 m
c) 7.3 Pm
d) 7.3 dam
Ans : b) 7.3 m
28.) The SI unit of thermodynamic temperature
a) Degree celsius.
b) Kelvin
c) Fahrenheit.
d) Ampere celsius
Ans : b) Kelvin