Question

Draw ray diagrams showing the image formation by a concave lens when an object is placed

1. at the focus of the lens
2. between focus and twice the focal length of the lens
3. beyond twice the focal length of the lens

Answer 1

The ray diagram showing the image formation by concave lens when an object is placed,

1. at the focus of the lens,
   
   
2. between focus and twice the focal length of the lens,
   
   
3. beyond twice the focal length of the lens,