Question

A concave mirror produced a magnification of 4 the object is placed​

Answer 1

Answer:

 A concave mirror produces a magnification of +4 when the object is placed between the focus and the pole. This shows that the image is erect and virtual. An erect and virtual image is formed in the case of the concave mirror only when the object is kept between the focus and pole.

Answer 2

Explanation:

the object should be placed between focus and pole then we get a virtual image for concave mirror and Also a positive magnification.

hope it helps