Explanation

When an object is placed far away from a concave mirror, its image will be:

• Real (a projected image that can be seen on a screen)
• Inverted (upside down)
• Smaller in size than the object (reduced)

Explanation

When an object is placed very close to a concave mirror, its image will be:

• Virtual (not a real image that can be projected onto a screen)
• Upright (not inverted)
• Larger in size than the object (magnified)

Explanation

• A mirror with a reflecting surface that bulges outwards, like the back side of a spoon, is called a Convex Mirror.
• This type of mirror is used in applications such as security mirrors, rear-view mirrors, and surveillance mirrors, as it provides a wider field of view.

Explanation

• A Concave Mirror has a curved reflecting surface that bulges inward, like the front side of a spoon.
• This type of mirror is used in telescopes, solar concentrators, and other applications where light needs to be focused.

Explanation

• A kaleidoscope contains several mirrors placed at an angle to each other, usually 60 degrees.
• This allows multiple reflections to be created of the objects inside the kaleidoscope.

Explanation

• A Periscope uses two plane mirrors placed at a 45° angle to each other.
• It allowing the user to see objects that are not in their direct line of sight.
• This is commonly used in submarines, tanks, and other applications where visibility is limited.

Explanation

• Diffused reflection occurs when parallel rays of light hit a rough surface, scattering in different directions.
• This type of reflection is characterized by a random change in direction of the reflected light, resulting in a diffuse or scattered beam.

Examples:

• Wall
• Paper
• Cloth
• Cardboards

Explanation

• Specular (Regular) reflection occurs when a parallel beam of light hits a smooth surface, such as a mirror.
• It is reflected as parallel rays, maintaining its original direction and intensity.

Examples:

• Polished metal surfaces
• Calm surface of a lake
• Calm water and mirrors

Explanation

• A movable pulley is a type of pulley system where the pulley is free to move along the rope or cable.
• This allows the force applied to the rope to be multiplied, making it easier to lift or move heavy loads.
• Movable pulleys are commonly used in cranes, winches, and other lifting machines.

Explanation

• When light travels in a straight line and strikes the surface of another medium, it reflects off the surface and changes direction.
• This is known as reflection.