The following figure shows an object and its image as formed by a diverging lens

Question

The following figure shows an object and its image as formed by a diverging lens. What are the signs (positive or negative) of the following.

(a) the object distance so

positive

negative    

(b) the image distance si

positive

negative    

(c) the focal length f

positive

negative   

The following figure shows an object and its image as formed by a diverging lens. What are the signs (positive or negative) of the following. (a) the object distance so positive negative (b) the image distance si positive negative (c) the focal length f positive negative

Explanation / Answer

Here ,

for the diverging lens

a)

the object distance is Positive.

(in the left of lens)

b)

image distance is Negative .

(in the left of lens )

c)

the focal length is negative (for diverging)

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