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Physical Quantities and Measurements
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Physical Quantities and Measurements
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Physical Quantities and Measurements
To measure mass instrument used is a
balance
cylinder
weight machine
flask
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Physical Quantities and Measurements
To measure shorter lengths with their accurate reading we use
measuring tapes
meter ruler
Vernier caliper
all of them
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Physical Quantities and Measurements
The science deals with the study of non-living things are known as
physical science
formula science
biological science
fundamental science
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Physical Quantities and Measurements
A way to express a number as a number between 1 and 10 having an appropriate power is called
scientific notation
prefix
base units
derived units
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Physical Quantities and Measurements
We can express 0.00380 in scientific notation as
3.80 × 10
2
3.80 × 10
4
3.80 × 10
3
3.80 × 10
−3
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Physical Quantities and Measurements
A meter rule is used to measure
weight
mass
length
force
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Physical Quantities and Measurements
Amount of a substance in terms of numbers is measured in
gram
kilograms
mole
newton
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Physical Quantities and Measurements
In old days the methods of measuring were
inaccurate
correct
accurate
perfect
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Physical Quantities and Measurements
The smallest change a sensitive beam balance can record is
100 mg
10 mg
50 mg
1 mg
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Physical Quantities and Measurements
Shorter distances or lengths are generally measured in
centimeters
millimeter
micrometers
kilometers
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