Chapter 5.3 Flashcards
What is the focal length
Distance between focus and center of lens
Where is the focal point of a converging lens
Past the lens
Where is the focal point of a diverging lens
Before the lens
What type of lens is converging?
It is a convex lens ()
What type of lens is diverging?
It is a concave lens )(
What does a converging lens do?
Brings rays closer together
What does diverging lens do
spreads light rays further apart
What is a virtual focus?
A virtual focus of a diverging lens is the point where rays incident on the lens and parallel to the principal axis will appear to have come from on emergence from the lens
What are the qualities of a real image
Can be projected onto a screen
Is on the other side of the lens from the object
What are the qualities of a virtual image
cannot be projected onto a screen
Is on the same side of lens as the object
Magnification formula
image size/object size
What is polarisation
The orientation of the place oscillation of a transverse wave. If a wave is polarised all oscillations occur in one single plane
What is the only type of wave that can be polarised?
Transverse
