MCQ
When a telescope is adjusted for parallel light, the distance of the objective from the eye piece is found to be $80 \,cm$. The magnifying power of the telescope is $19.$ The focal lengths of the lenses are
- A$61\,cm, 19 \,cm$
- B$40 \,cm, 40\, cm$
- ✓$76 \,cm, 4 \,cm$
- D$50 \,cm, 30\, cm$
