Q. Ratio between mortality and natality is called
A) Population ratio
B) Vitla index
C) Density coefficient
D) Census ratio
Explanation
Vital index represents the ratio between natality (birth rate) and mortality (death rate). It determines the normal rate of growth of population and can be calculated by the following formula: $Vital\ index = \frac{Natality}{Mortality} \times 100$
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Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.