TELESCOPE 1 online exercise for - Free Printable

Let’s go step by step to fill in the “TRUE OR FALSE” table based on what we know about refracting and reflecting telescopes — and using the diagrams as clues.

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1. Uses a plane mirror to reflect light.

- Looking at the diagram: The reflecting telescope has a label pointing to a “Plane mirror”. The refracting telescope does not.
- So, this is True for Reflecting Telescope, False for Refracting Telescope.

✔ Refracting: False
✔ Reflecting: True

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2. Light passes through a convex lens

- In the refracting telescope diagram, light rays go through lenses (and it says “focal point of both lenses” — implying lenses are used).
- Refracting telescopes use lenses — typically a convex objective lens.
- Reflecting telescopes use mirrors, not lenses for primary light gathering.
- So, this is True for Refracting, False for Reflecting.

✔ Refracting: True
✔ Reflecting: False

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3. Has the ability to view distant objects

- Both types of telescopes are designed to view distant objects — stars, planets, etc.
- This is true for both.

✔ Refracting: True
✔ Reflecting: True

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4. Has the ability to magnify an image

- Again, both telescopes magnify images — that’s their main job!
- Magnification comes from the combination of lenses or mirrors.

✔ Refracting: True
✔ Reflecting: True

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5. Uses 2 lenses

- The refracting telescope diagram shows two lenses (objective and eyepiece) — labeled “focal point of both lenses”.
- Reflecting telescopes use mirrors, not lenses — though some may have small corrective lenses, the basic design uses mirrors.
- So, this is True for Refracting, False for Reflecting.

✔ Refracting: True
✔ Reflecting: False

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6. Uses concave mirror / plane mirror

- The reflecting telescope diagram clearly shows a “Plane mirror” and implies a curved (concave) main mirror (since it reflects light to a focus).
- Refracting telescopes don’t use mirrors at all — they use lenses.
- So, this is False for Refracting, True for Reflecting.

✔ Refracting: False
✔ Reflecting: True

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Now let’s write the final answer in the correct format.

Final Answer:
| Statement | Refracting Telescope | Reflecting Telescope |
|------------------------------------------|----------------------|----------------------|
| Uses a plane mirror to reflect light. | False | True |
| Light passes through a convex lens | True | False |
| Has the ability to view distant objects | True | True |
| Has the ability to magnify an image | True | True |
| Uses 2 lenses | True | False |
| Uses concave mirror/ plane mirror | False | True |