Question

why is there 2 hour time lapse from Gujarat to andra pradesh

Answer 1

Because there is distance between both the states and sun rises in andra pradesh before gujrat because it is in the east .

Answer 2

there is a time lag from gujrat to Andra Pradesh of 2 hours bcoz the earth takes 4 minutes to cross1 longitude.
the differene between 2 points( between A.P n gujarat ) is of 300.
in this way the time difference is 30*4= 120 minutes or 2 hrs