Question

The relation between focal length, image distance and object distance in lens is [ ]

a)

1 11 = − f vu b)

1 11

= +

ufv c)

1 11

f vu

= + d)

1 11

f uv =​

Answer 1

Answer:

1/f = 1/u + 1/v is the relation b/w focal lenght , image and object distance