Question

An object is placed at the centre of curvature of a concave mirror of radius of curvature $20$cm. The nature and position of the image shall be.

• A. Virtual and $15$cm from the mirror
• B. Real and $20$cm from the mirror
• C. Virtual and $20$cm from the mirror
• D. Real and $10$cm from the mirror

Answer 1

The correct option is B Real and $20$cm from the mirror

Image of an object placed at center of curvature is inverted, real and of the same size and is formed at the center of curvature. Hence image will be real and at the center of curvature (20 cm from mirror).