Question

Share

Consider three converging lenses L₁, L₂ and L₃ having identical geometrical construction. The index of refraction of L₁ and L₂ are $\mu_1$ and $\mu_2$ respectively. The upper half of the lens L₃ has a refractive index $\mu_1$ and the lower half has $\mu_2$. A point object O is imaged at O₁ by the lens L₁ and at O₂ by the lens L₂ placed in same position. If L₃ is placed at the same place:

1. There will be an image at O₁
2. There will be an image at O₂
3. The only image will form somewhere between O₁ and O₂
4. The only image will form away from O_2.