Question

2. Find the nature and position of images, when an object is placed at different places on the
principal axis of a concave mirror. (lab activity)​

Answer 1

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→ If the object is placed in different position of the concave mirror :

1. Object is at infinity :

• Image is formed at the principal focus Image is real
• Image is inverted
• Image is diminished

2. Object is placed behind the centre of curvature :

• Image is formed between the principal focus and the centre of curvature
• Image is real
• Image is inverted
• Image is diminished .

3. Object is placed at centre of curvature:

• Image is formed at the centre of curvature
• Image is real
• Image is inverted
• Image is of same size of the object

4. Object placed between Centre and Focus :

• Image is formed behind the centre of curvature
• Image is real
• Image is inverted Image is magnified

5. Object is placed at the principal focus :

• Image is formed at infinity
• Image is real
• Image is inverted
• Image is magnified

6. Object is placed between focus and pole :

• Image is formed behind the mirror
• Image is virtual
• Image is highly magnified