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