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  • (a) Complete the following ray diagram : <img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAcoAAACTCAYAAAAOallXAAAQwUlEQVR4nO3dO5KkRheGYZYw5u9pFdkrGFMRyJYjJw25MnIJrABvHAULYAEY8vDLxiZk4uKe3+g4iKK5JFWZSfX0+0RgTE3dGor8yCuZAACATdnVXwAAgFdGU

(a) Complete the following ray diagram :

(b) Find the nature, position and size of the image formed.
(c) Use lens formula to determine the magnification in this case.

 

 
 
 
 
 

Answers (1)

(a)

(b) Virtual, erect and magnified image is formed 


(c) 

u = -18cm , f= 20 cm 

1/f = 1/v - 1/u

1/20 = 1/v - 1/(-18)

1/v = 1/-30 - 1/-15

v= -180cm 

m= v/u= -180/-18 = +10 

Posted by

Safeer PP

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