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प्रश्न
Answer the following in short.
What is parallax error?
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उत्तर
The error that can arise due to the wrong positioning of the eye while reading a scale is called parallax error.
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संबंधित प्रश्न
A piece of paper of dimensions 1.5 m × 20 cm has area ______.
Arrange the following substances in order of their increasing density:
(a) iron
(b) cork
(c) brass
(d) water
(e) mercury
The density of copper is 8.9 g cm-3. What will be its density in kg m-3 ?
Convert the following quantity as indicated:
4.2 m = cm
Express in second :
3 minute 15 second
Answer the following in short.
What are derived physical quantities? Give any two examples of derived physical quantities.
Answer the following in detail.
Which is the most suitable unit for measuring the volume of the swimming pool?
Give reason for the following.
Body parts should not be used for correct measurements of an object.
Give a reason for the following.
Measuring units are standardized.
Write SI units for the fundamental quantity.
