Identify the Incorrect statement.
1
Errors arising due to expansion in steel tapes are systematic errors which are cumulative in nature.
2
Random errors are mainly caused by limitations of observer and instrument.
3
Cumulative errors seriously affect the accuracy of the work and are proportional to the square root of the length of line.
4
Compensating errors do not affect the surveying work seriously and are proportional to square root of the length of line.