Physics 6.3.1 Flashcards

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1
Q

What is a ‘Lens’?

A

A Lens is a Piece of Equipment that Forms an Image by Refracting Light.

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2
Q

What are the 2 Types of Lens? (2)

A

-Convex.

-Concave.

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3
Q

What Happens to Light in Convex Lenses?

A

In a Convex Lens, Parallel Rays of Light are Converged to a Focus. This Point is Called the Principal Focus.

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4
Q

In a Convex Lens, Parallel Rays of Light are Brought to a Focus. What is this Point Called?

A

Principal Focus.

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5
Q

What do you Call the Distance from the Lens to the Principal Focus?

A

Focal Length.

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6
Q

What is the ‘Focal Length’?

A

The Distance from the Lens to the Principal Focus.

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7
Q

What does the Focal Length Depend on?

A

How Curved the Lens is.

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8
Q

The More Curved the Lens, the ___ the Focal Length.

A

Shorter.

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9
Q

What happens to Light Rays in Concave Lenses?

A

Parallel Rays of Light are Made to Diverge (Spread Out) from a Point (Principle Focus).

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10
Q

What are Convex Lenses Sometimes Called?

A

Converging Lens.

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11
Q

What are Concave Lenses Sometimes Called?

A

Diverging Lens.

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12
Q

The Principal Focus in Concave Lenses is the Point from which the Light Rays Appear to ___ from.

A

Diverge.

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13
Q

The More Curved the Convex Lens, the ___ the Focal Length.

A

Shorter.

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