In: Physics
Draw diagrams to indicate qualitatively the position, nature, and size of the image formed by a converging lens of focal length f for the following object distances: (a) infinity, (b) greater than 2f, (c) equal to 2f, (d) between 2f and f, (e) equal to f, (f) less than f.
a) Object at infinity-- image is formed at focal point , that is at distance from the lens. ( the image will be reduced in size)
b) Object at a distance greater than -- image is formed between and , and will be real,inverted and reduced in size.
c) Object at a distance equal to -- image is formed at , and will be real, inverted and of same size as that of object.
d) Object at a distance between and --- image is formed beyond , and will be, real , inverted and enlarged in size.
e) Object at a distance equal to -- image formed at infinity.
f) Object at a distance less than -- image is formed behind the object, and will be virtual, upright and enlarged in size.