Optics Question 128
Question: A double convex lens, lens made of a material of refractive index $ {\mu _{1}} $ , is placed inside two liquids or refractive indices $ {\mu _{2}} $ and $ {\mu _{3}} $ , as shown. $ {\mu _{2}}>{\mu _{1}}>{\mu _{3}} $ . A wide, parallel beam of light is incident on the lens from the left. The lens will give rise to
Options:
A) A single convergent beam
B) Two different convergent beams
C) Two different divergent beams
D) A convergent and a divergent beam
Show Answer
Answer:
Correct Answer: D
Solution:
As $ {\mu _{2}}>{\mu _{1}}, $ the upper half of the lens will become diverging. As $ {\mu _{1}}>{\mu _{3}}, $ the lower half of the lens will become converging
