Question

Write the relationship among the object distance (u), image
distance(v) and the focal length (f) of a (i) Spherical lens

Answer 1

Answer:

Object distance means what is the distance between pole and object. Image distance means when image is formed then the distance between pole and image is called image distance. Focal length is the distance between pole and the principal focus of the mirror.

Explanation:

Answer 2

Answer:

the general relation is : 1/f=1/v + 1/u

Explanation:

v= image distance , u = object distance

now apply the signs for the given condition depending on the type of image and mirror used. Divide the scenario into the 4 quadrants for better recognition of sign