An object `25cm`high is placed in front of a concave lens of focal length `30cm`.If the height of image fromed is `50cm`
if the image is erect and virtual then distance between object and image is
A. `25cm`
B. `15cm`
C. `40cm`
D. `60cm`

An object `25cm`high is placed in front of a concave lens of focal length `30cm`.If the height of image fromed is `50cm`
The image distance is ,if the image is real and inverted:
A. `90cm`
B. `45cm`
C. `30cm`
D. `25cm`