Question

The image of an object formed by a lens is of magnification -1. If the distance between the

object and its image is 60 cm, what is the focal length of the lens? If the object is moved 20 cm

towards the lens, where would the image be formed? State reason and also draw a ray

diagram in support of your answer. ​

Answer 1

Answer:

Explanation:

Prog. 1

Class name

: Prime

Member Methods:

Prime()

void input(int x)

void display()

: default constructor to initialize n

: to assign n with x

: to check whether the number is prime or not

Write a program by using a class with the above specifications:

​Prog. 1

Class name

: Prime

Member Methods:

Prime()

void input(int x)

void display()

: default constructor to initialize n

: to assign n with x

: to check whether the number is prime or not

Write a program by using a class with the above specifications:

​