5 • Lenses - Terminology

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9 Terms

1
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<p><span style="color: rgb(0, 0, 0);"><span>Identify this lens</span></span></p>

Identify this lens

Converging

Convex

2
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<p><span style="color: rgb(0, 0, 0);"><span>Identify this lens</span></span></p>

Identify this lens

Diverging

Concave

3
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Differentiate between Converging and Diverging lenses

  • Converging - has a positive power

  • Diverging - has a negative power

4
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<p><span style="color: rgb(0, 0, 0);"><span>Label This Formula</span></span></p><p><span style="color: rgb(0, 0, 0);"><em><span>Power of a lens</span></em></span></p>

Label This Formula

Power of a lens

P - power

f - focal length

5
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State the SI Unit for Power

m-1

6
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What page of the log tables can you find the Power of a Lens Formula?

60

7
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<p><span style="color: rgb(0, 0, 0);"><span>Label This Formula</span></span></p><p><span style="color: rgb(0, 0, 0);"><em><span>Two Thin Lenses In Contact</span></em></span></p>

Label This Formula

Two Thin Lenses In Contact

P - total power

P1 - power of lens 1

P2 - power of lens 2

8
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What page of the log tables can you find the Two Thin Lenses In Contact Formula?

60

9
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<p><span style="color: rgb(255, 0, 0);"><span>L</span></span><span style="color: rgb(0, 0, 0);"><span>abel This Formula</span></span></p><p><span style="color: rgb(0, 0, 0);"><em><span>Focal Length of a lens</span></em></span></p>

Label This Formula

Focal Length of a lens

f - total focal length

f1 - focal length of lens 1

f2 - focal length of lens 2