Answer: Opaque materials are those objects which does not allow light to pass through them. Example: - Wooden board, umbrella.Non-luminous objects are those which reflect the light from luminous bodies.

A wire mesh is an opaque object.



Explanation:

Opaque:
An object is said to be opaque if it does not allow light to pass through it. When light falls on an opaque object, it is either absorbed or reflected, and no light is transmitted through it. Opaque objects block the transmission of light completely.

Wire Mesh:
A wire mesh is a material made of intersecting metal wires or fibers that are woven or welded together to form a grid-like structure. It is commonly used for various applications, such as fencing, filtration, reinforcement, and protection.

Properties of Wire Mesh:

1. Non-Transparency:
A wire mesh is made up of solid metal wires that are closely spaced together, forming a dense structure. This arrangement of wires prevents the passage of light through the mesh. As a result, a wire mesh is considered opaque because it blocks the transmission of light.

2. Light Reflection and Absorption:
When light falls on a wire mesh, the metal wires reflect and absorb the light. The reflection and absorption of light by the wires prevent it from passing through the mesh. The dense arrangement of wires ensures that minimal light is transmitted.

3. Shadow Formation:
When an opaque object, such as a wire mesh, is placed in the path of light, it casts a shadow behind it. The shadow results from the obstruction of light by the mesh, as no light can pass through it.

Conclusion:
In conclusion, a wire mesh is classified as an opaque object because it does not allow the transmission of light. Its dense arrangement of metal wires prevents light from passing through, resulting in the object being non-transparent.

So, a wire mesh is opaque objects