Question

An object is placed at distance 4 cm in front of concave mirror whose focal length is 5 cm what is the image formed ​

Answer 1

Answer:

The image is formed inverted, virtual, and 2.2 cm away from the mirror

Here, f=5 cm, u= 4 cm.

According to mirror formula,

1/f = 1/v - 1/u

1/5 = 1/v - 1/4

1/5 + 1/4 = 1/v

9/20 = 1/v

v = 20/9

v= 2.2