Question

the focal length of converging lens is 20cm where will be the image is formed if an object is placed at 60cm from lens write the characteristics of the image

Answer 1

IMAGE WILL BE FORMED 30 CENTIMETERS FROM THE LENS

Answer 2

Answer:

focal length of converging lens=20

object distance=-60. (object distance always be-ve)

by using lens formula

1/f=1/v -1/u

=> 1/20 = 1/v - (1/-60)

=>1/20 = 1/v + (1/60)

=>1/20 - 1/60 = 1/v

=>3-1/60 =1/v

=>2/60. = 1/v

=> 30= v

Explanation:

The image Will be real

The image Will be inverted

The image Will be formed between f1 and f2