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प्रश्न
Answer the following in short.
What are the characteristics of a standard unit?
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उत्तर
1. It should be accepted universally.
2. It should be accurate.
3. It should be neither too small nor too big and easy to use.
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संबंधित प्रश्न
Select the correct alternative
The density of aluminium is 2.7 g cm-3 and of brass is 8.4 g cm-3. For the same mass, the volume of:
Select the correct alternative:
The symbol of degree celsius is
Define one metre, the S.I. unit of length. State it's one multiple and one submultiple.
Convert the following quantity as indicated:
4.2 m = cm
The diagram below shows a stick placed along a metre RULER. The length of the stick is measured keeping the eye at positions A, B, and C.
Convert the following quantity as indicated:
2500 kg = ………. metric tonne.
Convert the following quantity as indicated:
10 lb = ………. kg
Write the temperature of boiling water.
Assertion (A): Density is a derived physical quantity
Reason (R): Density cannot be derived from the fundamental physical quantities.
A physical quantity A is dependent on other four physical quantities p, q, r and s as given below A = `sqrt("pq"/("r"^2"s"^3))`. The percentage error of measurement in p, q, r and s are 1%, 3%, 0.5% and 0.33% respectively, then the maximum percentage error in A is ______ %.
