Effect of Removing Silver Coating:
If the silver coating around the center of a concave mirror is removed, the mirror will no longer reflect light at the center. The silver coating is what enables the mirror to reflect light, and without it, the concave mirror will lose its reflective properties. Thus, the mirror will no longer form an image, as the reflective surface is essential for focusing light and forming an image.
Therefore, removing the silver coating would mean that the mirror will not form any image. The reflection would not occur at the center, and no image will be formed at all.

A racing track is built around an elliptical ground whose equation is given by \[ 9x^2 + 16y^2 = 144 \] The width of the track is \(3\) m as shown. Based on the given information answer the following: 
(i) Express \(y\) as a function of \(x\) from the given equation of ellipse.
(ii) Integrate the function obtained in (i) with respect to \(x\).
(iii)(a) Find the area of the region enclosed within the elliptical ground excluding the track using integration.
OR
(iii)(b) Write the coordinates of the points \(P\) and \(Q\) where the outer edge of the track cuts \(x\)-axis and \(y\)-axis in first quadrant and find the area of triangle formed by points \(P,O,Q\).