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Astronomical Telescope |
| Objective lens |
Lower power |
| Eye lens |
Higher power |
| Position of the object |
At infinity |
| Nature of the image, I1 |
Real, inverted and magnified |
| Position of the image, I1. |
At the principle focus of object lens, fo. |
| Nature of the image, I2 |
Virtual, inverted and smaller in size. |
| Distance in between the two lens |
- The distance between the object lens and the eye lens in a compound microscope is equal to the sum of the focal length (fo + fe).
- If the distance between both lenses are bigger than (fo + fe), no image can be seen.
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| Magnification of the compound microscope. |
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