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Describe a reflecting type telescope. Wh...

Describe a reflecting type telescope. What are its advantage over the refracting telescope ?

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Reflecting type telescope :
Advantages :
1. Image is brighter compared to that in a refracting type telescope.
2. There is no chromatic aberration as the objective is a mirror
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RESONANCE-GEOMATRICAL OPTICS -Exercise-3
  1. The for point of a myopic person is 80 cm in front of the eye. What is...

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  2. (a) (i) Draw a labelled ray diagram to show the formation of image in ...

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  3. (a) Draw the ray diagram showing the geometry of formation of the imag...

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  4. The image obtained with a convex lens is erect and its length is 4 tim...

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  5. A converging lens is kept coaxially in contact with a diverging lens -...

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  6. Draw a ray diagram to show the working of a compound microscope. Deduc...

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  7. Two convex lenses of focal length 20 cm and 1 cm constitute a telescop...

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  8. A convex lens made up of glass of refractive index 1.5 is dippedin tur...

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  9. Use the mirror equation to show that (a) an object placed btween f and...

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  10. A gaint refrecting telescope at an observatory has an objective lens o...

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  11. A beam of light converges to a point P.A lens is placed in the path of...

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  12. For the same angle of incidence in media P,Q and R, the angles of refr...

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  13. Define magnifying power of a telescope. Write its expression. A smal...

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  14. An object AB is kept in front of a concave mirror as shown in Fig. ...

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  15. You are given three lenses L(1),L(2) and L(3) each of focal length 20 ...

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  16. Describe a reflecting type telescope. What are its advantage over the ...

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  17. Which type of lens is used to correct astigmatisum ?

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  18. A biconcave lens made of transparent material of refractive index 1.25...

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  19. Two monochromatic rays of light are incident normally on the face AB o...

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  20. A convex lens of focal length 20cm is placed coaxilly with a convex mi...

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