Question

Some parts of india have less density of population why

Answer 1

because population density totally depends on geographical factors and facilities there
u consider area of hills population is less because of poor topography but in plains like delhi population density is high

Answer 2

the records of population density 2011 of india state that the density 2011 has increased from a figure 324 to that of 382 per square kilometre, which is considerably higher than the average population density of the world 2011 which are 46 per square kilometre