A telescope has an objective of focal length and an eyepiece of focal length

PHYSICS · Multi-part · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments

Problem

A telescope has an objective of focal length

50\ \text{cm}

and an eyepiece of focal length

5\ \text{cm}

. The least distance of distinct vision is

25\ \text{cm}

. The telescope is focused for distinct vision on a scale

2\ \text{m}

from the objective. Calculate: (1) (a) Magnification produced. (2) (b) Separation between the objective and eyepiece.