If it is 10 00 a m at Greenwich Mean Time GMT then what will be the time at 90 deg E ...........

Geography (CDS) World Physical Aspects

If it is 10:00 a.m. at Greenwich Mean Time (GMT), then what will be the time at 90° E longitude?

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2023 CDS -1 GK

5:00 a.m.

4:00 a.m.

3:00 p.m.

4:00 p.m.

- Greenwich Mean Time (GMT) is the base reference for time zones.

- Earth's rotation covers 360 degrees of longitude in 24 hours.

- This means 15 degrees of longitude equates to 1 hour of time difference.

- The longitude 90° E is 90 degrees east of the Greenwich Meridian.

- 90° E is 6 hours ahead of GMT (90/15 = 6).

- So, if it's 10:00 a.m. at GMT, it will be 4:00 p.m. at 90° E.

- Therefore, the correct answer is:

Option:4, 4:00 p.m.

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