No links please:

Q. A compound microscope consists of two lenses of focal lengths 0.8 cm and 3 cm respectively. If the object is 0.85 cm from the objective and the final image is to be 24 cm from the eye-piece, compute the magnifying power of the microscope.

A shot sighted person cannot see distinctly objects beyond 2m from the eye. Find the focal length and the powe rof the spectacle lens which will enable him to see distant objects clearly.