Question

concave lens of focal length 50 cm is used to form the virtual image of an object of 2 cm height kept at 200cm​

Answer 1

Explanation:

Distance of object from the mirror u = −50 cm

Distance of image from the mirror v = −2 cm

For lens, we know

1/f = 1/v - 1/u

    = 1/-2 - 1/-50

    =  - 0.48cm

Hence, it is a concave lens.

Hope this helps.

MARK AS BRAINLIEST.