Question

An object is placed in front of a concave mirror of focal length 18 cm ..If a real image is formed at 54 cm find the object distance.

Answer 1

Answer:

Given that,

f=18cm

v=54cm

From the mirror equation,

1/f=1/u+1/v

1/18=1/54+1/u

1/u=3-1/54

1/u=2/54

1/u=1/27

u=27cm

it concludes that when the object is placed at between the focus and center of curvature then the image will get beyond the center of curvature....

And it is real, inverted and magnified image....

Explanation:

Hope it helps you frnd....