Index
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Light
Matching exercise
Match the items on the right to the items on the left.
Check
Virtual
???
Can be projected onto a screen
Cannot be projected onto a screen
Near objects blurred
Point where rays meet
Right way up
Splits rays apart
Upside down
Distance between focus and lens axis
Brings rays together
Distant objects blurred
Real
???
Can be projected onto a screen
Cannot be projected onto a screen
Near objects blurred
Point where rays meet
Right way up
Splits rays apart
Upside down
Distance between focus and lens axis
Brings rays together
Distant objects blurred
Principal Focus
???
Can be projected onto a screen
Cannot be projected onto a screen
Near objects blurred
Point where rays meet
Right way up
Splits rays apart
Upside down
Distance between focus and lens axis
Brings rays together
Distant objects blurred
Converging
???
Can be projected onto a screen
Cannot be projected onto a screen
Near objects blurred
Point where rays meet
Right way up
Splits rays apart
Upside down
Distance between focus and lens axis
Brings rays together
Distant objects blurred
Diverging
???
Can be projected onto a screen
Cannot be projected onto a screen
Near objects blurred
Point where rays meet
Right way up
Splits rays apart
Upside down
Distance between focus and lens axis
Brings rays together
Distant objects blurred
Focal length
???
Can be projected onto a screen
Cannot be projected onto a screen
Near objects blurred
Point where rays meet
Right way up
Splits rays apart
Upside down
Distance between focus and lens axis
Brings rays together
Distant objects blurred
Upright
???
Can be projected onto a screen
Cannot be projected onto a screen
Near objects blurred
Point where rays meet
Right way up
Splits rays apart
Upside down
Distance between focus and lens axis
Brings rays together
Distant objects blurred
Inverted
???
Can be projected onto a screen
Cannot be projected onto a screen
Near objects blurred
Point where rays meet
Right way up
Splits rays apart
Upside down
Distance between focus and lens axis
Brings rays together
Distant objects blurred
Short sight
???
Can be projected onto a screen
Cannot be projected onto a screen
Near objects blurred
Point where rays meet
Right way up
Splits rays apart
Upside down
Distance between focus and lens axis
Brings rays together
Distant objects blurred
Long sight
???
Can be projected onto a screen
Cannot be projected onto a screen
Near objects blurred
Point where rays meet
Right way up
Splits rays apart
Upside down
Distance between focus and lens axis
Brings rays together
Distant objects blurred
Check
OK
Index
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