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प्रश्न
Give an example of a constant which has no unit.
उत्तर
Reynold's number is a constant which has no unit.
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संबंधित प्रश्न
The surface area of a solid cylinder of radius 2.0 cm and height 10.0 cm is equal to ______ (mm)2.
A vehicle moving with a speed of 18 km h–1covers ______ m in 1 s.
Explain this statement clearly:
“To call a dimensional quantity ‘large’ or ‘small’ is meaningless without specifying a standard for comparison”. In view of this, reframe the following statements wherever necessary:
- Atoms are very small objects
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- The speed of sound is much smaller than the speed of light.
Fill in the blank by suitable conversion of unit:
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Fill in the blank by suitable conversion of unit:
3.0 m s–2= ______ km h–2
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If the unit of force is 100 N, unit of length is 10 m and unit of time is 100 s, what is the unit of mass in this system of units?
A new system of units is proposed in which unit of mass is α kg, unit of length β m and unit of time γ s. How much will 5 J measure in this new system?
