Physics · Ray Optics and Optical Instruments
A refracting telescope, whose objective lens has a focal length of 1500 cm (15 m), is used to view the moon. The diameter of the moon is 3.48 × 106 m and the average distance of the moon from the Earth is 3.8 × 108 m. What is the radius of the real image of the moon formed by the objective lens?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 16.9 cm✓
- 2138 cm
- 369 cm
- 413.8 cm
Correct answer
6.9 cm
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