Answer: The correct answer is option C.
Explanation:
IMA (Ideal Mechanical advantage) is defined as ratio of input distance to the output distance.
\(IMA=\frac{D_I}{D_O}\)
Radius of the handle of the sharper = \(D_I\) =1.5 m
Radius of the sharping mechanism = \(D_O\) =0.5 m
\(I.M.A=\frac{D_I}{D_O}=\frac{1.5 cm}{0.5 cm}=3\)
3 is the IMA of the pencil sharpener. Hence, option C is correct.
