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प्रश्न
Answer the following in detail.
Explain in detail why railways and airlines use the 24-hour clock format.
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उत्तर
Railways and airlines use the 24-hour clock format as they operate round the clock (24 hours).
The main features of the 24-hour clock system are:
- a.m. and p.m. are not used in order to avoid confusion.
- Time is shown by 4 digits. The first two digits indicate the number of hours, and the next two digits indicate the number of minutes.
- Time is expressed continuously from 00.00 (midnight) to 24:00.
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संबंधित प्रश्न
Fill in the blank
l m3 =..........cm3
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:
lO mm is equal to
Convert the following quantity as indicated :
12 inch = ft
Convert the following quantity as indicated:
0.2 km = m
State if the following statement is true or false:
Second is considered as the fundamental unit of time in both CGS and MKS systems.
Tick the most appropriate answer.
Which of the following is a fundamental physical quantity?
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 are the types of physical quantity?
Assertion (A): Density is a derived physical quantity
Reason (R): Density cannot be derived from the fundamental physical quantities.
