Question

$f\propto t^2$
If at f = 9, t = 3, then find the constant of variation.

• A. 1
• B. 0.5
• C. 2
• D. 0.25

Answer 1

The correct option is A 1

$Given,f\propto t^2$
Let the constant of variation be k.
$\Rightarrow f=k{t}^2$
Given, at f = 9, t = 3.
So, $k=\frac{f}{t^2}=\frac{9}{3^2}=\frac{9}{9}=1.$