Question

Calculate the image distance for an object of height 12 mm at a distance of 0.20 m from a concave lens of focal length 0.30 m?

Answer 1

Answer:

0.60 /10 power-3

Explanation:

0.30*0.20/12*10 power-3

Answer 2

Answer:

u=0.20m=-20cm

f=0.30m=-30cm

1/v -1/u = 1/f

1/v - 1/-20 =1/ -30

1/v= -5/60

v = -12cm= -0.12m (virtual and erect)

m= v/u

-12/-20 = 3/5

m= 3/5

m= h'/h

3/5 = h'/12mm

h'=12*3/5

h' =7.2 mm