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Draw a labelled diagram showing the form...

Draw a labelled diagram showing the formation of image of a distant object using an astronomical telescope in the normal adjustment.

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To draw a labeled diagram showing the formation of an image of a distant object using an astronomical telescope in normal adjustment, follow these steps: ### Step 1: Draw the Optical Axis Begin by drawing a horizontal line across your paper. This line represents the optical axis of the telescope. **Hint:** The optical axis is an imaginary line that runs through the center of the lenses and indicates the path along which light travels. ### Step 2: Draw the Objective Lens ...
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The object of astronomical telescope has

(a) (i) Draw a labelled ray diagram to show the formation of image in an astronomical telescope for a distant object. (ii) Write three distinct advantages of a reflecting type telescope over a refracting type telescope. (b) A convex lens of focal length 10 cm is placed coaxially 5 cm away from a concave lens of focal length 10 cm. If an object is placed 30 cm in front of the convex lens, find the position of the image formed by the combined system.

(a) Draw a labelled ray diagram to obtain the real image formed by an astronomical telescope is normal adjustment position. Define its magnifying power. (b) You are given three lenses of power 0.5 D , 4D and 10D to design a telescope. (i) Which lenses should be used as objective and eyepiece? Justify your answer. (ii) Why is the aperture of the objective preferred to be large ?

In astronomical telescope, the final image is formed at

The length (L) of the astronomical telescope, for normal adjustment is

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