The equivalent resistance between and for the mesh shown in the figure is

The equivalent resistance between and for the mesh shown in the figure is

When the resistance is connected in series then the formula of equivalent resistance, , but when they are connected in parallel then net resistance is, , so in the above diagram the equivalent resistance will be,
,
in the above branch, resistance are connected in parallel, so new equivalent resistance will be, 
So, the final resistance will be, .
Asked in: NEET 2020 (Phase 2)