Question : The Earth has been divided into many time zones. How many degrees does each time zone cover?
Option 1: 24 degrees
Option 2: 20 degrees
Option 3: 15 degrees
Option 4: 10 degrees
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Correct Answer: 15 degrees
Solution : The correct option is 15 degrees .
Time zones are generally divided into 15-degree longitudinal segments. Since there are 360 degrees of longitude around the Earth and 24 hours a day, this division results in 24 time zones, each covering 15 degrees longitude. This division allows for a standardised way of measuring time globally. As the Earth rotates 360 degrees in 24 hours, each time zone represents one hour of time difference from the Greenwich Mean Time (GMT).
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