Question

Antireflection coating is helps in which case
of the following?
To absorb and control the amount of light
entering into the medium
To allow maximum light to reflect from top
surface
Minimizing the reflection of light from top
surface
To allow minimum light to enter into the medium​

Answer 1

Answer:

The closest materials with good physical properties for a coating are magnesium fluoride, MgF2 (with an index of 1.38), and fluoropolymers, which can have indices as low as 1.30, but are more difficult to apply. MgF2 on a crown glass surface gives a reflectance of about 1%, compared to 4% for bare glass.