6.1 A light ray strikes a reflective plane surface at an angle of 58° with the surface - NSC Technical Sciences - Question 6 - 2023 - Paper 1

Light ray OB: This is the incoming light ray that strikes the surface at angle 1.

Angle 1 is the angle of incidence, which is the angle formed between the incident ray (OB) and the normal line to the surface at the point of incidence.

Angle 2 is the angle of reflection, which is the angle formed between the reflected ray and the normal line.

The relationship between angle 1 and angle 2 is given by the law of reflection, which states that the angle of incidence (angle 1) is equal to the angle of reflection (angle 2). Therefore, angle 1 = angle 2.

The phenomenon observed in the diagram is refraction, which is the bending of light as it passes from one medium to another.

1. Optical fiber communication, where light is transmitted through fibers using total internal reflection.
2. Lenses in optical devices, such as cameras and glasses, to focus light.

1. The light must be travelling from a more dense medium to a less dense medium.
2. The angle of incidence must be greater than the critical angle.

The type of lens used in the diagram is a convex lens.

1. The image is real, meaning it can be projected onto a screen.
2. The image is inverted relative to the object.

1. Used in magnifying glasses to create enlarged images of small objects.
2. Used in projectors to focus and magnify images for display.

No image is formed when the object is placed at F because the rays passing through the optical center after refraction become parallel and do not converge or diverge to form an image.