EASY
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Physical quantities are measurable quantities. 

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Important Questions on Motion and Measurement of Distance

EASY
Science>Physics>Motion and Measurement of Distance>Physical Quantity
A plano-convex lens of unknown material and unknown focal length is given. With the help of a spherometer we can measure the
EASY
Science>Physics>Motion and Measurement of Distance>Physical Quantity
The commutator bracket XY,Z is expanded as
EASY
Science>Physics>Motion and Measurement of Distance>Physical Quantity
Why a foot-step cannot be used as a standard unit of length?
EASY
Science>Physics>Motion and Measurement of Distance>Physical Quantity
Discuss why non-standard units cannot be used for accurate measurements.
MEDIUM
Science>Physics>Motion and Measurement of Distance>Physical Quantity
Why did people in ancient times realise the need for some fixed quantity of measurement?
EASY
Science>Physics>Motion and Measurement of Distance>Physical Quantity
Name two body parts of a person which can be used as units of measuring length.
EASY
Science>Physics>Motion and Measurement of Distance>Physical Quantity
Which of the following measures was used in ancient times?
MEDIUM
Science>Physics>Motion and Measurement of Distance>Physical Quantity
What is cubit? Explain why cubit cannot be used as a standard unit of length.
EASY
Science>Physics>Motion and Measurement of Distance>Physical Quantity
The footstep is an unreliable measure of length because
EASY
Science>Physics>Motion and Measurement of Distance>Physical Quantity
Name any two measures used in ancient times.
MEDIUM
Science>Physics>Motion and Measurement of Distance>Physical Quantity
Elaborate the ways in which people in ancient times used to measure length. Also mention the importance or need of accurate measurement.
MEDIUM
Science>Physics>Motion and Measurement of Distance>Physical Quantity
How did people measure the length and weight of things in olden days?
EASY
Science>Physics>Motion and Measurement of Distance>Physical Quantity
Define hand span.
MEDIUM
Science>Physics>Motion and Measurement of Distance>Physical Quantity
What did people in ancient times use to measure length?
EASY
Science>Physics>Motion and Measurement of Distance>Physical Quantity
Explain why, hand-span cannot be used as a standard unit of length.
EASY
Science>Physics>Motion and Measurement of Distance>Physical Quantity
The length between the tip of the finger and elbow is called _____.
EASY
Science>Physics>Motion and Measurement of Distance>Physical Quantity
Why cannot a foot length or cubit be used as a standard unit of length?
EASY
Science>Physics>Motion and Measurement of Distance>Physical Quantity
What did people in ancient times use for measurement?
EASY
Science>Physics>Motion and Measurement of Distance>Physical Quantity
The hand span is a reliable method of measurement of length.
MEDIUM
Science>Physics>Motion and Measurement of Distance>Physical Quantity
Explain with examples how people measured length in ancient times.