Question

the focal length of converging mirror is 10 cm if the object of height 5 cm is placed 15 cm from the mirror that find the image distance , nature and the size of the image

Answer 1

F_(-10)cm.

u_(-15)cm

h1_5cm

1/u+1/v=1/f

1/-15+1/v=1/-10

1/v=1/-10+1/15

1/v=-3+2/30

1/v=-1/30

v=-30cm.

So the image is real and inverted.image is formed 30cm in front of mirror.

m=-v/u

m=-(-30)/-15

m=30/-15

m=-2

m=h2/h1

-2=h2/5

-10=h2

So the height of image is 10cm.