n transparent slabs are arranged one on top of each other. The refractive indices of the material of the slabs are mu_(1),mu_(2),mu_(3) ***, mu_(n)and the thickness are t_(1),t_(2),t_(3), ***t_(n). An image is formed at a particular position when a point object is seen perpendicularly through this combination of slabs. If the image is formed at the same position when seen through a single glass slab instead of the combination of slabs, what is the equivalent refractive index of the new glass slab?

n transparent slabs are arranged one on top of each other. The refract

1.	n transparent slabs are arranged one on top of each other. The refractive indices of the material of the slabs are mu_(1),mu_(2),mu_(3) *, mu_(n)and the thickness are t_(1),t_(2),t_(3), *t_(n). An image is formed at a particular position when a point object is seen perpendicularly through this combination of slabs. If the image is formed at the same position when seen through a single glass slab instead of the combination of slabs, what is the equivalent refractive index of the new glass slab?
Answer» ANSWER :`[(underset(i=1)OVERSET(N)sumt_(i))/(underset(i=1)overset(n)SUM(t_(i)/mu_(i))]`

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