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What is the basic astronomical basis of the local time difference between India's eastern and western extremes?

Answer and explanation

Correct answer: Earth's rotation and longitudinal difference

Local solar time is governed by Earth’s rotation from west to east and by longitude. Earth turns through 360° in about 24 hours, so 15° of longitude corresponds to approximately one hour, or 1° to about four minutes. Places farther east face the Sun earlier and consequently have an earlier local time than places farther west. India’s considerable east-west longitudinal extent therefore produces a noticeable local-time difference between its extremes. Option A states both essential causes. Earth’s revolution is related mainly to the year and seasons, not the ordinary east-west local-time difference; latitude does not determine this time calculation. Tides, coastline, area and population density are irrelevant. Thus A is correct.

Related tags

Earth RotationLongitudeLocal TimeMeridiansAnd Local TimeLongitude Meridians And Local TimeGeographical Coordinates And TimeGeographyClass 11 Mcq

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