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Physics Class 11 - Chapter 1
MeasurementsTest - 5
1.
No pf steradian in one sphere of radius R are?
a) 4 pi r
b) 2 pi
c) 4 pi
d) 4 pi r
2
2.
In scientific notation 0.00054 can be written as?
a) 5.4x10
-4
b) 5.4x10
-3
c) 5.4x10
4
d) 5.4x10
3
3.
Age of universe is almost?
a) 8.6x10
17
sec
b) 5.6x10
17
sec
c) 3.2x10
17
sec
d) 1.4x10
17
sec
4.
The error which have same effect on the measurements of a particular quantity is called?
a) Systematic error
b) Error due to uncertainties
c) Random error
d) All of these
5.
Which one the following has the derived unit?
a) Area
b) Length
c) Time
d) Mass
6.
Which one is the unit of energy?
a) Kilowatt
b) Electron volt
c) Js
-1
d) gms
-2
7.
SI unit of temperature is?
a) K
b) F
o
c) C
o
d) All of these
8.
The ratio of nano meter to 1 attometer is?
a) 10
8
b) 10
7
c) 10
9
d) 10
6
9.
In the measurement of 800kg,if the least count of scale is 10kg,then number of significant figures are?
a) One
b) Two
c) Three
d) Four
10.
Dimensional analysis is used for?
a) Checking the homogeneity of a physical quantity
b) Verification of laws
c) Balancing the equations
d) Equating the equations
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