The mean diameter of a thin brass rod is to be measured by vernier callipers. Why is a set of 100 measurements of the diameter expected to yield a more reliable estimate than a set of 5 measurements only? | Learn NCERT solution | Education portal Class 11 Physics | Study online Unit-2 Units and Measurements



Q.8(c):- The mean diameter of a thin brass rod is to be measured by vernier callipers. Why is a set of 100 measurements of the diameter expected to yield a more reliable estimate than a set of 5 measurements only?

 

Answer:-



A set of 100 measurements is more reliable than a set of 5 measurements because random errors involved in the former are very less as compared to the latter.