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Which option shows a high-level cause-effect relation related to India's size and extent?

Answer and explanation

Correct answer: Longitudinal extent — need for time uniformity

The governing relationship is that longitudinal extent produces differences in local solar time. Earth rotates 360° in about 24 hours, so 15° of longitude corresponds to roughly one hour of time difference. Since India has considerable east-west extent, local time can differ between its eastern and western regions. To avoid confusion in transport, communication, administration, and public schedules, the country follows one Indian Standard Time based on 82°30'E. Thus option A presents a valid cause-effect chain. Option B joins two different geographical ideas without a necessary causal link. Options C and D pair unrelated measurements and do not explain a practical consequence of India's extent.

Related tags

Cause EffectLongitudinal ExtentStandard TimeSize And ExtentIndia LocationGeographyClass 11 Mcq

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