68°7'E to 97°25'E
Explanation
India is located entirely in the Northern and Eastern Hemispheres. Its geographical extent is defined by specific latitudes and longitudes relative to the Equator and the Prime Meridian, respectively.
Analysis of Extent:
- Longitudinal Extent: India lies in the Eastern Hemisphere. Its mainland extends from 68°7'E in the west (Gujarat) to 97°25'E in the east (Arunachal Pradesh).
- Latitudinal Extent: The mainland of India extends between latitudes 8°4'N and 37°6'N.
- Incorrect Options:
- 8°4'N to 37°6'N represents the latitudinal extent of the mainland, not the longitudinal extent.
- 68°7'W to 97°25'W is incorrect because India is not in the Western Hemisphere (W).
Key Takeaway:
India's longitudinal extent is approximately 30°, which causes a time difference of about two hours between the westernmost and easternmost points of the country.