Question

A concave mirror of focal length 15cm forms an image having twice the linear dimensions of the object. The position of the object when the image is virtual will be –

• A. 22.5cm
• B. 7.5cm
• C. 30cm
• D. 45cm

Answer 1

Answer: (B)

7.5cm

Answer 2

– ̃ u = – 7.5m