The diagram shows a concavo-convex lens of refractive index μ2. What is the condition on the refractive indices μ1 and μ3 so that the lens is diverging?

Engineering

Physics

Curved Surface Refraction

Question

The diagram shows a concavo-convex lens of refractive index μ₂. What is the condition on the refractive indices μ₁ and μ₃ so that the lens is diverging?

2μ₃ < μ₁ + μ₂

μ₃ > μ₁ + μ₂

2μ₃ > μ₁ + μ₂

μ₃ > 2(μ₁ – μ₂)

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$\frac{μ_{3}}{v} - \frac{μ_{1}}{- \infty} = \frac{μ_{2} - μ_{1}}{- 2 R} + \frac{μ_{3} - μ_{2}}{- R}$

v < 0