Q. In expression, $L_{t} = L_{0} + rt$, of arithmetic growth rate, $L_{t},\ L_{0}$ and $r$ represents $L_{t}$ $L_{0}$ $r$
A) Length at time Length at time Elongation per zero $'t'$ unit time
B) Length at time Length at time Elongation per $'t'$ zero unit time
C) Length at time Length at time Growth rate $'t'$ zero
D) Both (b) and (c)
Explanation
Both (b) and (c). Arithmetic Growth Rate The expression of arithmetic growth is exemplified by roots (or organ) elongating at constant rate. On plotting the length of an organ against time, a linear curve is obtained. Mathematically it is expressed as [image:15_image27.emf] Constant linear growth, a plot of length L against time $L_{t} = L_{0} + rt$ $L_{t}$ = Length of time ‘$t$’ $L_{0}$ = Length of time to $r$ = Growth rate or elongation per unit time
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.