Question

Frosted glass is widely used for translucent windows. The region where a transparent adhesive tape is stuck over the frosted glass becomes transparent. Most reasonable explanation for this is:
A) Diffusion of adhesive glue into glass
B) Chemical reaction at adhesive tape- glass interface
C) Refractive index of adhesive glue is close to that of glass
D) Adhesive glue is more transparent than glass

Answer 1

Hint: Frosted glass is produced by coating on the surface. Frosted glass is made by acid etching of clear sheet glass or by sandblasting of clear sheet glass. By doing this a pitted surface will be created on one side of the glass and it has the effect of rendering the translucent glass by scattering of light.

Complete step by step answer:
In the given question it is said that a transparent adhesive tape is stuck on the surface of glass. So we will adjust the refractive index of the upper coating to make it same as that of glass.
By adjusting the refractive index, the region where the adhesive tape was stuck becomes transparent.
Result- Since by adjusting the refractive index the region becomes transparent. So, the most reasonable explanation is option (C) which states that the refractive index of adhesive glue is close to that of glass.

Note: Following are some applications of frosted glass-
1. Frosted glass is used to distribute light uniformly in a photographic contact printer.
2. It is used to achieve visual privacy while it allows light to pass through it.
3. Some decorative patterns can be created on the glass.
4. Frosted glass is used in light bulbs to evenly distribute light from the filament of the bulb.
5. The frosted glass effect can also be achieved by using vinyl film or canned frosted glass sprays.
6. Frosted glass cannot be used for recycling purposes because these glasses are formed by acid etching. So, frosted glass is considered to be contaminated.