Explain two advantages of a reflecting telescope over a refracting telescope.

Write two advantages of a reflecting telescope over a refracting telescope.

Write two advantages of a reflecting telescope over a refracting telescope.

(a) Draw a ray diagram showing the formation of image by a reflecting telescope (b) Write two advantages of a reflacting telescope over a refracting telescope .

Define resolving power of a simple astronomical telescope. State one advantage of a reflecting telescope over refracting telescope.

(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) (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.

Write three distinct advantages of a reflecting type telescope over a refracting type telescope.