The average height of Kosi plain from mean sea level is
2023
The average height of Kosi plain from mean sea level is
Answer: C. 30 m — ConceptAn area-weighted mean elevation represents the average height of an entire landform above mean sea level. Larger-area zones influence that mean more…
- A.
300 m
- B.
150 m
- C.
30 m
- D.
More than one of the above
- E.
None of the above
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Show answer & explanation
Correct answer: C
Concept
An area-weighted mean elevation represents the average height of an entire landform above mean sea level. Larger-area zones influence that mean more strongly than smaller high or low patches.
Application
For an exam-specific factual geography item, the decisive check is the official paper and its corresponding answer key. The BPSC 2023 PRT General Studies paper contains this Kosi-plain question, and the official key assigns the numeric value 30 m.
As a physical plausibility check, the cited Kosi-plain profile spans approximately 25 m at the lower plain to 54 m near its apex. The value 30 m lies within this low-elevation span, whereas 150 m and 300 m lie above it.
Cross-check
The official answer key and the independent elevation-range check agree on a single listed numeric value. The multiple-alternative and no-listed-value fallbacks therefore do not describe this single-answer item.
Result
Therefore, the average height of the Kosi plain above mean sea level is 30 m.