Question

The focal length of converging lens is 20cm.An object is 60cm from the lens where is the image be formed and what kind of image is it

Answer 1

Answer:

f=20

u=-60

1/f=1/v-1/u

v=30 cm

Answer 2

Explanation:

f= 20cm

u= -60 cm

v= ?

1/v- 1/u = 1/f

1/v = 1/f + 1/u

= 1/20 + 1/-60

= 1/20 - 1/60

= 3 - 1 / 60

= 2/60

= 1/30

v= 30 cm

real n inverted