This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Rural & Urban Health Centres, Workers, Norms, Subject name: Social & Preventive Medicine
Population norm for Health assistant in tribal areas: 
Select and explain. 
A. 1/30000, B. 1/20000, C. Jan-00, D. Jan-00
B: 1/20000
Answer: B: 1/20000 
Explanation: Health assistant (male) covers: 30,000 population in plains. 20,000 population in hilly/tribal areas. Also remember, population covered by: 1 Sub-center in plains- 5,000; Hilly/tribal areas- 3,000. 1 CHC in plains- 1,20,000 ; Hilly/tribal areas - 80,000.