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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
Write true or false for a given statement.
The density of water is maximum at 4°C.
Fill in the blank
36 km h-1 = _______ ms-1.
Select the correct alternative
The correct relation for speed is
Arrange the following substances in order of their increasing density:
(a) iron
(b) cork
(c) brass
(d) water
(e) mercury
A car travels a distance of 15 km in 20 minute. Find the speed of the car in m s-1.
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.
Answer the following in detail.
What are the fundamental physical quantities? Name any three fundamental physical quantities.
State if the following statement is true or false. Correct the statement if it is false.
The error in reading a scale due to the wrong positioning of the eye is called human error.
Answer the following in detail.
When are approximations necessary in daily life and when should they be avoided?
Solve the following numerical problem.
A piece of wire is wound around a pencil 60 times. If the total width of all the turns is 4 cm, find the diameter of the wire.
