MHT-CET Physics and Chemistry Full Test-6 PHY-Que-31 Solution

Q.31. A double convex air bubble in water behaves as

A. convergent lens

B. divergent lens

C. plane slab

D. concave mirror

Answer :- B. divergent lens

Explanation :-

\mu _{water}=1.33

and \mu _{air}=1

As air is optically rarer, air glass, μ_air < μ_glass,  converging nature of the convex lens changes to diverging. Thus it behaves as divergent lens.