Question

A double convex lens, made of a material of refractive index $\mu _ { 2 } > \mu _ { 1 } > \mu _ { 3 }$A wide, parallel beam of light is incident on the lens from the left. The lens will give rise to :

• A. A single convergent beam
• B. Two different convergent beams
• C. Two different divergent beams
• D. A convergent and a divergent beam.

Answer 1

Answer: (D)

A convergent and a divergent beam.

Answer 2

: As the upper half of the lens will become diverging. As $\mu _ { 1 } > \mu _ { 3 }$ the lower half of the lens will become converging.