Properties of light

When light strikes the surface of another medium, it can change direction due to reflection or refraction, depending on the properties of the medium.

A plane mirror forms an image that is the same size as the object.

Concave mirrors are used for shaving and make-up purposes because they can form magnified images of the face.

A periscope is used in submarines to monitor the surface of the water, allowing a view from a submerged position.

Convex mirrors are commonly used as security mirrors in shopping malls because they provide a wide field of view.

The law of reflection states that the angle of incidence is equal to the angle of reflection.

A mirror is an example of a reflective surface because it reflects light effectively.

When light hits a transparent substance like glass, it is mostly transmitted through the material.

Regular reflection occurs on a smooth surface like a mirror, where parallel incident rays remain parallel after reflection.

When light strikes a rough surface, scattered reflection occurs, causing light to reflect in many different directions.

A sheet of paper shows scattered reflection due to its rough surface.

According to the law of reflection, the angle of the reflected ray is equal to the angle of incidence.

When a parallel beam of light hits a smooth surface, it reflects as parallel rays due to regular reflection.

Transparent materials allow light to pass through them.

The angle between the incident ray and the normal is called the angle of incidence.

A polished mirror would best reflect light in one direction due to its smooth surface.

Diffuse reflection is observed on a dry asphalt road at night due to its rough surface.

Regular reflection helps you see clear images in a mirror due to the smooth surface reflecting light uniformly.

A plane mirror always forms a virtual and upright image.

A plane mirror follows the law of reflection where the angle of incidence is equal to the angle of reflection.

The image formed in a plane mirror appears to be located behind the mirror.

If a point is 3 cm in front of a plane mirror, its image is located 3 cm behind the mirror.

A pinhole camera forms a real and inverted image.

Compared to a mirror, an image in a pinhole camera is typically smaller.

A plane mirror forms an image that cannot be projected on a screen because it is a virtual image.

The image formed by a pinhole camera changes with the distance from the object.

The function of plane mirrors in a periscope is to change the direction of light, allowing the viewer to see over or around obstacles.

A reflecting telescope uses mirrors to view distant celestial bodies by gathering and focusing light.

A concave mirror is used in the world’s largest telescope to gather and focus light from distant celestial objects.

Regular reflection helps us see through a microscope using a mirror, as it directs light in a controlled manner.

A kaleidoscope works on the principle of multiple reflection, creating intricate patterns through repeated reflections.

The angle between the mirrors in a typical kaleidoscope is usually 60°.

Plane mirrors are used in a kaleidoscope to create multiple reflections and form symmetrical patterns.

When mirrors in a kaleidoscope are set at 60° to each other, they form the shape of an equilateral triangle.

A concave mirror has a surface that curves inward, which allows it to focus light.

A convex mirror has a surface that bulges outward, allowing it to diverge light rays.

When an object is placed close to a concave mirror, the image formed is virtual, upright, and enlarged.

When an object is placed far from a concave mirror, the image formed is real, inverted, and smaller.

Concave mirrors are used in shaving or make-up mirrors because they can produce magnified images.

Concave mirrors are used by dentists because they provide a magnified image of the teeth.

Convex mirrors are mostly used as rear-view mirrors because they provide a wider field of view.