Question

if the magnification of the lens is 6 and the image distance is 24 cm then find the object distance?​

Answer 1

Answer:

Given

Distance if the object, u = -24cm

Distance of the image, v = -12cm

We know that

Magnification, m = -v/u

=> m = -(-12) / -24

=> m = 12/ -24

=> m = -1/2

=>m= -0.5

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Answer 2

Answer:

The object distance is -4cm

Explanation:

Given that,

The magnification of lens is 6 and the image distance is 24cm.

We are required to find the image distance based on the given data.

As the magnification of the lens is greater than 1,it must be an concave lens.

Therefore,its image distance is negative$= > v=-24cm$

Magnification is the ratio of image distance to the object distance and hence we write it as

$m=\frac{v}{u}$

Substituting the values of magnification and image distance in above relation we get,

$6=\frac{-24}{u}= > u=\frac{-24}{6} =-4cm$

Therefore,the object distance is -4cm

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