An object is placed symmetrically between two plane mirrors inclined at an angle of 50 degrees. What will be the number of images formed?

The correct option is C 6
Angle between the mirrors $={50}^{\circ }$

Now, $n={360}^{\circ }/\theta ={360}^{\circ }/{50}^{\circ }=7.27$

Which is odd.
When placed symmetrically, number of images formed will be (n-1)
i.e 7-1=6 images