Question

3. a thin lens of focal length, f=12cm, forms an image of an object 36cm away....

3. a thin lens of focal length, f=12cm, forms an image of an object 36cm away. how far from the lens is the image formed?
a. 18cm
b. 9cm
c. 12cm
d. 3cm
e. 36cm
Science   Advanced-Physics   
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Answer #1

If we take 36 as combination of image and object distance then soln(1) using quadratic will be used.

If we take 36 as object distance then solution 2 will be used.and if 36 is V then answer will be option(e)

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