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(HS) Optics 8 > Lenses > Flashcards

Lenses Flashcards

1
Q

What are concave lenses?

A

Lenses that are thinner in the middle

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2
Q

Describe the image formed in a concave lens:

  • Size of the image
  • Up-down orientation
A

Smaller

Up-right

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3
Q

What are concave lenses commonly used for?

A

Near-sighted eyeglasses

Telescopes

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4
Q

How do light rays move when they go through concave mirrors?

A

The light rays diverge or spread apart

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5
Q

What are convex lenses?

A

Lenses that are thicker in the middle

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6
Q

Describe the image formed in a convex lens that is more than 2 focal lengths away from the lens:

  • Size of the image
  • Up-down orientation
A

Smaller

Upside-down

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7
Q

Describe the image formed in a convex lens that is between 1-2 focal lengths from the lens:

  • Size of the image
  • Up-down orientation
A

Larger

Upside-down

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8
Q

Describe the image formed in a convex lens that is at the focal point:

  • Size of the image
  • Up-down orientation
A

No image

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9
Q

Describe the image formed in a convex lens that is less than 1 focal length away from the lens:

  • Size of the image
  • Up-down orientation
A

Larger

Up-right

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(HS) Optics 8 (6 decks)

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