Civil Engineering MCQJE Level Civil Engineering
In a mock-test problem built around long levelling sights, which answer is most appropriate? Avoid the common trap that curvature raises the line of sight relative to level surface.
SurveyingCurvature and RefractionEASY
Choose the correct answer
A
both corrections are always zero
B
refraction doubles curvature error in the same direction
C
curvature raises the line of sight relative to level surface
D
curvature correction is negative while refraction partly offsets it
Correct Answer
D. curvature correction is negative while refraction partly offsets it
AI Detailed Explanation & IS Code Reference
Unlock the reasoning, formula path and code-linked notes inside your student dashboard.
Curvature/refraction corrections matter for long sights. Correct option: D.
ScoreCardAI links this solution with subject, topic and difficulty signals so your scorecard can identify weak areas after a full mock test.
Concept shortcut
IS/IRC reference
Common trap
Practice more Civil Engineering questions
This MCQ belongs to RRB JE Civil & Allied Engineering CBT-2 Full Mock Test Series. Full tests include timed attempts, rank comparison and subject-wise analysis.