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प्रश्न
Make a detailed study of finding time with the help of longitudes. Give one practical example.
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उत्तर
Indian Standard Time is based on 82 1/2° E longitude. So if the time in India is 12 noon, so it will be 6.30 A.M. in England or GMT. The time difference between 0° and 82 1/2° E will be 82.5 × 4 – 330 minutes or 330 ÷ 60 = 5 1/2 hours. So there is a difference of 5 1/2 hours between India and England, as England lies in the west, so the time will be 5 1/2 hours less than India.
संबंधित प्रश्न
State the use of the lines of longitude in relation to distance and time.
Into how many time zones, has the world been divided?
Name the two hemispheres of the Earth made by the equator?
Why are letters E or W added to longitude values?
What is the “Prime Meridian”?
What is “Greenwich Mean Time”?
How far is it correct to say that local time is the Sun time?
Give a reason for the following :
Local time is a theoretical reality, while Standard Time is a practical necessity.
State two properties of lines of longitude.
“The degree of longitude decreases in length poleward”. Why?
