Question

an object is kept at 5 cm distance from a convex lens. calculate the image distance if the focal length of the lens is 2 cm. ​

Answer 1

Answer:

-10

Explanation:

know from lens formula

v

1

−

u

1

=

f

1

v

1

=

f

1

+

u

1

v

1

=

10

1

−

5

1

v=−10cm

As v = -10 the image will be virtual and form in front of the lens.