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प्रश्न
Answer the following in short.
Which institution in the world maintains the guidelines for using the SI units correctly?
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उत्तर
General Conference of Weights and Measures.
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संबंधित प्रश्न
Define the term density of a substance.
Explain the meaning of the term speed.
A solid silver piece is immersed in water contained in a measuring cylinder. The level of water rises from 50 ml to 62 ml. Find the volume of silver piece.
A rectangular field is of length 60 m and breadth 35 m. Find the area of the field.
A block of iron has dimensions 2 m × 0.5 m × 0.25 m. The density of iron is 7.8 g cm−3. Find the mass of block.
Answer the following in detail.
State some common rules to write SI units correctly.
Fill in the blank.
There are ............. fundamental physical quantities.
The magnitude of a physical quantity consists of ______.
Assertion (A): Density is a derived physical quantity
Reason (R): Density cannot be derived from the fundamental physical quantities.
The density of a material in SI unit is 128 kg m-3. In certain units in which the unit of length is 25 cm and the unit of mass is 50 g, the numerical value of density of the material is _____.
