1.

A particle moves along the trajectory of parabola `y = ax^(2)`. Assuming speed to be constant, find the radius of curvature at the origin.A. `(1)/(2a)`B. `(1)/(a)`C. `(1)/(2ax)`D. `(2)/(a)`

Answer» Correct Answer - A
`(dy)/(dx) = 2 ax rArr x = (1)/(2a) (d u)/(dx)`


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