The final image formed by an astronomical telescope is
- real, erect and diminished
- virtual, inverted and diminished
- real, inverted and magnified
- virtual, inverted and magnified
The Correct Option is D
Approach Solution - 1
An astronomical telescope consists of two lenses: the objective lens and the eyepiece lens. The objective lens forms a real, inverted, and diminished image of a distant object. This image then serves as the object for the eyepiece lens, which forms a magnified, virtual, and inverted image for the observer. Hence, the final image is virtual, inverted, and magnified.
The final image formed by an astronomical telescope is \({\text{virtual, inverted, and magnified}} \), so the correct answer is (D).
Approach Solution -2
An astronomical telescope consists of two lenses: an objective lens and an eyepiece. The objective lens is a large lens that collects light from a distant object and forms a real, inverted, and diminished image at its focal plane. This image is then magnified by the eyepiece lens, which acts as a magnifier to produce the final image that the observer sees. For an astronomical telescope, the final image formed by the eyepiece is:
- Virtual, because the eyepiece creates an image that appears to come from a point behind the lens.
- Inverted, because the initial real image formed by the objective is inverted, and the eyepiece does not flip it back.
- Magnified, as the eyepiece magnifies the real image formed by the objective lens.
Thus, the correct answer is (D): virtual, inverted and magnified.
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