- 1(current)
Q. No.An observer is using an astronomical refracting telescope to observe planets in normal adjustment. The focal lengths of the objective and eyepiece used in the telescope construction are \(20\) m and \(2\) cm respectively. Consider the following statements about the telescope:
The correct statements are:
| (a) | the distance between the objective and the eyepiece is \(20.02\) m. |
| (b) | the magnification of the telescope is \(-1000\). |
| (c) | the image of the planet is erect and diminished. |
| (d) | the aperture of the eyepiece is smaller than that of the objective. |
| 1. | (a), (b), and (c) |
| 2. | (b), (c), and (d) |
| 3. | (c), (d), and (a) |
| 4. | (a), (b), and (d) |
Subtopic: Â Telescope |
 64%
From NCERT
NEET - 2022
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A lens of large focal length and large aperture is best suited as an objective of an astronomical telescope since:
| 1. | a large aperture contributes to the quality and visibility of the images. |
| 2. | a large area of the objective ensures better light-gathering power. |
| 3. | a large aperture provides a better resolution. |
| 4. | all of the above. |
Subtopic: Â Telescope |
 78%
From NCERT
NEET - 2021
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
- 1(current)
Q. No.
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