A convex lens of focal length `20 cm` has a point object placed on its principal axis at a distance of `40 cm` from it. A plane mirror is placed `30 cm` behined the convex lens. Locate the position of image formed by this combination.
Text Solution
AI Generated Solution
To solve the problem step-by-step, we will analyze the optical system consisting of a convex lens and a plane mirror.
### Step 1: Identify the given data
- Focal length of the convex lens (f) = +20 cm (positive because it is a convex lens)
- Object distance from the lens (u) = -40 cm (negative because the object is placed on the same side as the incoming light)
- Distance of the plane mirror from the lens = 30 cm
### Step 2: Use the lens formula to find the image distance (v)
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