If the meridian that determines the Indian Standard Time-(IST) is given the status of Prime Meridian then what will be longitude of the International Date line?

Correct option is B

The correct answer is (b) 97°30' East.
· If the meridian that determines the Indian Standard Time (IST) is given the status of Prime Meridian, the longitude of the International Date Line would be 97°30' East.
· The Indian Standard Time meridian is at 82°30' East. If this becomes the Prime Meridian, 180° added to it (since the International Date Line is 180° from the Prime Meridian) results in 262°30'.
· Converting this to the standard longitudinal notation, it becomes 97°30' East, which is directly opposite on the globe.
Important Key Points:
· IST meridian: 82°30' East.
· Prime Meridian: Reference line for time and longitude.
· International Date Line: 180° from Prime Meridian.
· Resulting longitude: 97°30' East.
· Standard longitudinal notation.
Knowledge Booster:
· 97°30' West: Incorrect conversion result.
· 82°30' East: Current IST meridian, not the International Date Line.
· 180° East: Standard longitude for International Date Line, but relative to the current Prime Meridian.