Define refraction

How does a lens form an image

What is the refractive index ?

How do we calculate the refractive index

Describe the ray pattern of a converging lens lens

What is the focal length ?

Describe the ray pattern of a diverging lens

How is a real image formed ?

How is a virtual image formed ?

How do you calculate magnification of a virtual image ?

describe the image formed when an object is placed between a converging lens and F

What is the difference between a real and virtual image

How does a camera for an image