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A doubled convex lens of refractive index $\mu$ is kept inside two immiscible liquids of refractive inclines $\mu_1$ and $\mu_2$. as shown $\mu_2 < \mu < \mu _1$ , A parallel beam of light is incident on the lens. After refraction on the lens we will get,


(a) only divergent beam of light

(b)only convergent beam of light

(c)parallel beam of light

(d) Divergent and convergent beam of light.

1 Answer

A double convex lens immersed in a liquid whose refractive inbox is less than that of glass will behave like a convergent lens and if the same lens is immersed in a liquid whose refractive index is greater than the refractive index of glass it will behave like a divergent lens.
Since $\mu_2 < \mu <\mu _1$
We get both divergent and convergent beam .
Hence d is the correct answer.
answered Jan 20, 2014 by meena.p

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