An astronomical telescope consisting of an objective of focal length `60cm` and eye-piece of focal length `3 cm` is focused on the moon so that the final image is formed at least distance vision, i.e. `25 cm` from the eye-piece piece. Assuming the angular diameter of moon as `1//2^(@)` at the objective, calculate (a) angular size and (b) lenear size of image seen through the telescope.