Which of the followig objects possess a center of symmetry ?
(i) Tree (ii) Six-pointed star
(iii) Five-pointed star (iv) Dumbbell
(v) Nail

Options

A. (ii),(iv)
B. (iv),(v)
C. (i),(ii)
D. (ii),(iii)

Answer

A

Explanation

The center of symmetry is invariably a point in the center of an object (or molecule). A line extended form any point (or atom) in the object (or molecule) thorugh the center for the same distance meets a similar point (or atom) in the object (or molecule) at an equal distance form the center. objects with a center of symmetry are (ii) and (iv).