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Physical Quantities and Measurement
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Let's practice 30 mcqs on
Physical Quantities and Measurement
mcqs by everyone
All physical quantities are
not measurable
measurable
not related to each other
related to each other
By converting 3 700 000 Watt into kilowatt, we get
37 kW
3.7 W
3 7000 kW
3 700 kW
Standard quantity for measuring is called
base quantity
physical quantity
Unit
derived quantity
Significant digits in275.
00 are
3
5
2
4
F zero line of vernier scale is on right side of zero of main scale, then zero error will be
One
Zero
Positive
Negative
Least count of ruler is
50 mm
10 mm
2 mm
1 mm
In screw guage, if zero of circular scale coincides with index line, then zero error will be
One
Negative
Zero
Positive
We can express 0.00380 in scientific notation as
3.80 × 103
3.80 × 10−3
3.80 × 102
3.80 × 104
F zero line of vernier scale is on left side of zero of main scale, then zero error will be
Negative
Zero
Positive
One
Volume, area, speed, electric charge, force and work are examples of
prefixes
base quantities
quartile quantities
derived quantities
Smallest possible division up to which an instrument can measure is called
large count
least count
shortest length
small count
Smallest measurement an electronic balance can take is
0.001 g
0.01 g
0.00001 g
0.0001 g
Least count of Vernier calipers is
0.01 cm
0.1mm
0.01 mm
1 cm
35 can be rounded to
1.4
1.6
1.3
1.5
Measuring cylinder is used to measure the
density of liquid
area of liquid
volume of liquid
None of above
We study physical aspects of sound waves, their production, properties and applications under branch named as
plasma physics
atomic physics
Heat
Sound
Units used to measure derived quantities are known as
square units
base units
derived units
None of above
Physical sciences were divided into
6 disciplines
5 disciplines
3 disciplines
4 disciplines
In laboratories,a one metre long tool to to measure length of an object or distance between two points is called
vernier callipers
physical balance
metre rule
screw guage
Study of motion of objects, its causes and effects is called
atomic physics
Heat
Mechanics
plasma physics
Number of base units in SI are
9
7
4
6
Unit of volume is
meter
meter²
C
meter³
Least count of metre ruler is
0.1 mm
1 mm
0.5 mm
0.001 mm
We can express200.
7 in scientific notation as
2.007 × 10³
200.7 × 10²
27 × 10³
2.007 × 10²
Counting is not simply
measuring
Subtracting
Multiplying
Adding
Words or letters added before a unit and stand for multiples or sub-multiples of that unit are called
mass
rate
units
prefixes
Mechanical stop watches have least count upto
0.9 seconds
0.1 seconds
0.01 seconds
0.5 seconds
By usin prefixes, we can write 335 × 10-8 s as
0.335 µs
335 µs
3.35 µs
33.5 µ
By usin prefixes, we can write 32 × 10-10 kg as
3.2 µg
32 µg
320 µg
0.32 µg
While measuring length eye must be kept
None of above
at an acute angle
horizontal with scale
above the scale
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