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Use a ruler to find the length of the line.

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Important Questions on Measurement of Length and Motion

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Science>Physics>Measurement of Length and Motion>How Do We Measure?
Light year is a unit of
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Science>Physics>Measurement of Length and Motion>How Do We Measure?
In a ⊙O,r if the angle subtended by the minor arc at the centre of the circle is θ, then the length of the minor arc l is _____.
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Science>Physics>Measurement of Length and Motion>How Do We Measure?
The length of an arc of a circle having radius 15 cm is 20 cm. Hence its area of minor sector is _____ cm2.
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Science>Physics>Measurement of Length and Motion>How Do We Measure?
The length of a piece of a feather is around 2.2 cm. When the same feather is wound closely around a pencil, it goes around five times. Can you calculate the distance once around the pencil?
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Science>Physics>Measurement of Length and Motion>How Do We Measure?
How will you measure the circumference of a five rupee coin and the girth of a tree?
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Science>Physics>Measurement of Length and Motion>How Do We Measure?
Name two common devices used for measuring length.
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Science>Physics>Measurement of Length and Motion>How Do We Measure?

Aeroplane is longer than the bicycle.

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Science>Physics>Measurement of Length and Motion>How Do We Measure?

Fill in the blank spaces by choosing correct words from the list given below:

List: millimetre, kilometre, centimetre, metre.

The 1/10,000,000 part of the distance from the equator to the north pole along the longitude passing through Paris is called a _____.

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Science>Physics>Measurement of Length and Motion>How Do We Measure?
Is it possible to measure same distance in different units?
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Science>Physics>Measurement of Length and Motion>How Do We Measure?
What is the SI unit of length?
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Science>Physics>Measurement of Length and Motion>How Do We Measure?
Explain with a diagram how parallax error can arise.
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Science>Physics>Measurement of Length and Motion>How Do We Measure?

Name the standard unit for measuring length.

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Science>Physics>Measurement of Length and Motion>How Do We Measure?
What precautions should be taken while measuring the length of a pencil using a ruler?
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Science>Physics>Measurement of Length and Motion>How Do We Measure?
What is the SI unit of length? Can we measure any length using this unit? Give example.
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Science>Physics>Measurement of Length and Motion>How Do We Measure?
In your life, it is essential to measure everything very accurately.
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Science>Physics>Measurement of Length and Motion>How Do We Measure?
State one advantage of using SI units for the measurement.
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Science>Physics>Measurement of Length and Motion>How Do We Measure?
Explain why estimation is necessary in daily life.
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Science>Physics>Measurement of Length and Motion>How Do We Measure?
While measuring the length of a pencil, the reading of the scale at one end is 5.5 cm and that at the other end is 17.2 cm. What is the length of the pencil?
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Science>Physics>Measurement of Length and Motion>How Do We Measure?

Find out the length of the feather in the picture given below.

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Science>Physics>Measurement of Length and Motion>How Do We Measure?
Cotyledons are also called-