an object is kept at a distance of 30 cm from a diverging lens its focal length is 15 cm find at what distance the image is formed and find the magnification of image draw the ray diagram
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an object is kept at a distance of 30 cm
Don't draw a 30 cm line and 2F, F & Optical center.
My teacher said (I'm a DAV student) in such questions you are suppose to chose some length and suppose that it's 30 cm like 8 cm.
its focal length is 15 cm that means the new supposed lens would be 4 cm.
The object should be F & 2F.
Every image formed in concave lens is virtual, erect & diminished.
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