The length of a survey line, when measured with a chain of 20 m nominal length, was found to be 841.5 m. If the chain used is 0.1 m too long, the correct length of the measured line is

This question was previously asked in
ESE Civil 2014 Paper 2: Official Paper
View all UPSC IES Papers >
  1. 845.7m
  2. 837.39 m
  3. 843.6 m
  4. 839.4 m

Answer (Detailed Solution Below)

Option 1 : 845.7m
Free
ST 1: UPSC ESE (IES) Civil - Building Materials
20 Qs. 40 Marks 24 Mins

Detailed Solution

Download Solution PDF

Concept:

Where,

l = true length of the line

l= measured length of a line

L = true length of chain/tape

L’ = Incorrect length of chain/tape

Calculation:

l’= 841.5m

L  = 20m

as a chain is 0.1m too long,

L’  = 20.1m

l = 845.7m

Mistake point:

● If the chain is 0.1m too long, L’ = 20.1m

● If the chain is 0.1m too short, L’ = 19.9m

Latest UPSC IES Updates

Last updated on Jul 2, 2025

-> ESE Mains 2025 exam date has been released. As per the schedule, UPSC IES Mains exam 2025 will be conducted on August 10. 

-> UPSC ESE result 2025 has been released. Candidates can download the ESE prelims result PDF from here.

->  UPSC ESE admit card 2025 for the prelims exam has been released. 

-> The UPSC IES Prelims 2025 will be held on 8th June 2025.

-> The selection process includes a Prelims and a Mains Examination, followed by a Personality Test/Interview.

-> Candidates should attempt the UPSC IES mock tests to increase their efficiency. The UPSC IES previous year papers can be downloaded here.

More Linear Measurement Questions

Hot Links: teen patti master 2025 teen patti gold online teen patti real money teen patti master official