A double convex air bubble in water behaves as

A double convex air bubble in water behaves as
  1. convergent lens
  2. divergent lens
  3. plane slab
  4. concave mirror

Solution

$\mu_{\text {water }}=1.33 \text { and } \mu_{\text {air }}=1$ As air is optically rarer, $\mu_{\text {air }} < \mu_{\text {glass, }}$, converging nature of the convex lens changes to diverging. Thus it behaves as divergent lens.

Asked in: MHT CET 2023 (10 May Shift 1)

Practice more Optics questions on Aicharya