Question

Which of the following is transparent?
a) Stone
b) Wood
c) Plastic
d) Glass

Answer 1

A transparent object allows all light to move through it. Materials like air, water, and glass pass light straight through them. Since glass enables all the light to cross through it, it is a transparent substance. Glass is transparent to all apparent light. Stone, plastic and wood are opaque materials.

Complete step-by-step solution:
In optics, transparency is the absolute property of permitting light to move through the material without an appreciable light scattering. On a visible scale, the photons can be told to obey Snell's Law. A transparent material is formed up of components with a consistent refractive index. Transparent materials seem clear, with the overall look of one colour or any combination leading up to a brilliant spectrum of each colour.
Light rays can move through transparent substances. The index of refraction of transparent substances is almost uniform. Most of the incident light on a transparent object carries through it. Light rays obey Snell’s law of refraction while moving through transparent objects. The quantity of scattering is significantly smaller. Therefore, a clear picture of the opposite side of the material. Transparent materials are utilized for lenses, spectacles, spherical mirrors, and many more.
From glass, light passes easily from it. From stone, wood and plastic, light does not pass easily. They are opaque materials.
Option (d) is correct.

Note: Materials can be categorized based on the measure of light they pass. Materials that permit the complete transmission of light are described transparently. Any object can be observed through the transparent material. Opaque materials either flash or receive any incident light. As a consequence, light rays cannot cross through opaque substances. Translucent materials provide partial transmission of light by them. A portion of the incident beam may get returned or distributed as it moves through the material's interior. An object, viewed through a translucent material, seems fuzzy or blurred.