Mention all the values of u, v, f, h and h' (positive or negative) in:
(i) Convex Mirror; (ii) Concave Mirror; (iii) Convex Lens; (iv) Concave Lens
(i) Convex Mirror; (ii) Concave Mirror; (iii) Convex Lens; (iv) Concave Lens
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Answer:
(a) Object distance (u) for a concave mirror or convex mirror is always negative because an object is always placed to the left side of the mirror and the distances towards the left side of the mirror are always negative.
(b) In case of a concave mirror, if the image is formed on the left side of the mirror, then the image distance (v) will be negative and if the image is formed on the right side of the mirror, then the image distance (v) will be positive. This is because distances measured to the left of the mirror are negative and to the right of the mirror is positive.
(c) Image distances (v) for a convex mirror is always positive because the image is always formed behind the mirror.
Explanation: