Question

A virtual, errect and magnified image object is to be produced with a concave mirror of focal length 12 CM. which of the following object distance should be chosen for this purpose?
1. 10cm
2.15cm
3.20cm​

Answer 1

Answer:

10cm

Explanation:

a concave mirror forms a virtual image between focus and pole

focal length is12cm

so the correct answer is 10cm as it is between focus and pole

Answer 2

Answer:

a concave mirror forms virtual , erect and magnified image only when the object is placed between the focus and the pole .

so the object distance must be less than 12 cm

so the correct option is 1. ) 10 cm