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प्रश्न
Make a detailed study of finding time with the help of longitudes. Give one practical example.
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.
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संबंधित प्रश्न
Give a reason for the following:
Lines of longitude are also called Meridians of longitude?
Give a reason for the following:
The Greenwich time is called Greenwich Mean Time.
With reference to the International Date Line, state the following:
Give an example of how time lost or gained is computed with reference to this line.
An important programme was to be broadcast from Mumbai at 7.30 p.m. This was heard by some Indian sailors near Ivory Coast in West Africa at 20°W longitude. What was the local time there?
“The degree of longitude decreases in length poleward”. Why?
A ship crossing international dateline at mid-night on Wednesday Eastwards, find that it is mid-night Tuesday on the American side. Why?
True or False.
The time at a place in the east of Greenwich is ahead of that in Greenwich.
Which place is used as a standard for time all over the world?
Statement I: The lines of latitude on Earth are used to find the location of a place and define the heat zones on Earth.
Statement II: The lines of longitudes on Earth are used to find the location of a place and to calculate time.
Choose the correct option:
The lines of longitude converge at the ______.
