Identify the device used as a spherical mirror or lens in following cases,
i. Object is placed beyond the centre of curvature of the mirror forms real and inverted dimnished image.
ii. Object placed at center of curveture in lens form same size as object.
iii. Object placed anywhere in front of a lens forms virtual erect and highly dimnished image
Answer variants:
Concave lens
Concave mirror
Convex lens
Convex mirror