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प्रश्न
Answer the following in short.
What do you mean by a mean solar day?
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उत्तर
Mean solar day is the time taken by the earth to make one complete rotation about its own axis.
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संबंधित प्रश्न
Arrange the following substances in order of their increasing density:
(a) iron
(b) cork
(c) brass
(d) water
(e) mercury
Define one metre, the S.I. unit of length. State it's one multiple and one submultiple.
Convert the following quantity as indicated:
0.01 kg = ………. g
Write the temperature of melting ice.
Tick the most appropriate answer.
Which of the following is a fundamental physical quantity?
Fill in the blank.
There are ............. fundamental physical quantities.
Give a reason for the following.
Measuring units are standardized.
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.
What is the physical quantity? give example.
What do you mean by ‘unit’?
