thin converging lenses Flashcards
1
Q
converging lenses are _______ in the middle than at the edges
A
thicker
2
Q
a converging lens causes all emerging light rays to _______ at a point
A
converge
3
Q
what is the definition of a focal length?
A
focal length is the distance between the optical centre C and the principal focal point F
4
Q
what is the principal focal point / principal focus?
A
it is the point on the principal axis where all the rays parallel to the principal axis meet after passing through the lens/
5
Q
real images are always on the ____ side of the lens as the object
virtual images are always on the ____ side of the lens as the object
A
opposite
same
6
Q
for real images, the _____ the object is from/to the lens, the ____ the image will be to the lens and vice versa
A
further, closer
