Lenses- optics

What is a thin lense?

lenses with a thickness small compared to their radius of curvature. They refract light to form images by bending rays at their surface

Convex(converging) lens

Thicker in the middle

bends light rays toward a focal point

can form real or virtual images depending on object position

Concave(Divergin) lens

Thinner in the middle

Bends light rays away from a focal point

Always forms virtual, upright, and reduced image

What are the 3 ray rules if the object is between C and F?

Ray 1: Travels parallel to the principal axis, then refracts through the focal point on the opposite side

Ray 2: Travels through the center if the lens (optical center) and continues straight without bending

Ray 3: Travels toward the focal point on the objects side, then emerges parallel to the principal axis

What will the location be like of the image?

beyond the 2nd focal point

What will the size be like

Magnified

What will the orientation be like

Inverted

Will the image be real or virtual

Real(can be projected onto a screen