In the displacement method, a convex lens is placed in between an object and a screen if the magnification in the two position are m_1 and m_2(m_1gtm_2) and the distance between the two positions of the lens is x, the focal length of the lens is

In the displacement method, a convex lens is placed in between an obje

1.	In the displacement method, a convex lens is placed in between an object and a screen if the magnification in the two position are m_1 and m_2(m_1gtm_2) and the distance between the two positions of the lens is x, the focal length of the lens is
Answer» `(X)/(m_1+m_2)` `(x)/(m_1-m_2)` `(x)/((m_1+m+2)^2)` `(x)/((m_1-m_2)^2)` ANSWER :A

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In the displacement method, a convex lens is placed in between an object and a screen if the magnification in the two position are m_1 and m_2(m_1gtm_2) and the distance between the two positions of the lens is x, the focal length of the lens is

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