Question

what do you mean by isobars

Answer 1

a line on a map connecting points having the same atmospheric pressure at a given time or on average over a given period.

Answer 2

Isobars :-

Atoms of different elements are said to be isobars if they have same mass numbers though their atomic numbers are different. i.e., inspite of different number of neutrons and protons , the sum of n+p is the same.