Question

An object is placed at 10 cm in front of a concave mirror of focal length 5 cm. The image formed will be ______.

• A. virtual, erect and magnified
• B. real, inverted and diminished
• C. virtual, erect and diminished
• D. real, inverted and magnified

Hint:

Any object placed \textbf{beyond} $F$ in front of a concave mirror always produces a \textbf{Real and Inverted} image. Only when the object is between $F$ and the Mirror ($P$) does it become Virtual and Erect.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
For a concave mirror, the nature of the image depends on where the object is relative to the focal point ($F$) and the center of curvature ($C$).
Step 2: Detailed Explanation:
Focal length ($f$) = 5 cm. Center of Curvature ($C$) = $2f = 10$ cm. The object distance ($u$) is given as 10 cm. This means the object is exactly at the Center of Curvature ($C$). When an object is at $C$ of a concave mirror: 1. The image is formed at $C$. 2. The image is Real and Inverted. 3. The image is the same size as the object (magnification = -1).
*Note: Looking at the options provided, if 'same size' isn't an option, (b) is the closest categorical match for a real image, though technically it is not diminished.*
Step 3: Final Answer:
The image is real and inverted.