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Light: Reflection and Refraction

Physics10 CardsCreated 6 months ago

This deck covers the fundamental concepts of light, including reflection and refraction, properties of spherical mirrors and lenses, and their applications.

What makes objects visible?

Objects are visible because they reflect light that falls on them, which is then received by our eyes.
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Key Terms

Term
Definition
What makes objects visible?
Objects are visible because they reflect light that falls on them, which is then received by our eyes.
What are the laws of reflection?
1) The angle of incidence is equal to the angle of reflection. 2) The incident ray, the normal to the mirror at the point of incidence, and the reflec...
What is a spherical mirror?
A spherical mirror is a mirror with a reflecting surface that forms part of a sphere. It can be concave or convex.
Define the principal focus of a concave mirror.
The principal focus of a concave mirror is the point on its principal axis where light rays parallel to the axis converge after reflection.
What is the mirror formula?
The mirror formula is 1/v + 1/u = 1/f, where v is the image distance, u is the object distance, and f is the focal length.
Explain refraction.
Refraction is the bending of light as it passes from one transparent medium to another, due to a change in its speed.

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TermDefinition
What makes objects visible?
Objects are visible because they reflect light that falls on them, which is then received by our eyes.
What are the laws of reflection?
1) The angle of incidence is equal to the angle of reflection. 2) The incident ray, the normal to the mirror at the point of incidence, and the reflected ray all lie in the same plane.
What is a spherical mirror?
A spherical mirror is a mirror with a reflecting surface that forms part of a sphere. It can be concave or convex.
Define the principal focus of a concave mirror.
The principal focus of a concave mirror is the point on its principal axis where light rays parallel to the axis converge after reflection.
What is the mirror formula?
The mirror formula is 1/v + 1/u = 1/f, where v is the image distance, u is the object distance, and f is the focal length.
Explain refraction.
Refraction is the bending of light as it passes from one transparent medium to another, due to a change in its speed.
What is the refractive index?
The refractive index is the ratio of the speed of light in vacuum to its speed in a given medium.
What is the lens formula?
The lens formula is 1/v - 1/u = 1/f, where v is the image distance, u is the object distance, and f is the focal length.
What is the power of a lens?
The power of a lens is the reciprocal of its focal length, measured in dioptres (D).
Why are convex mirrors used as rear-view mirrors in vehicles?
Convex mirrors are used because they provide a wider field of view and always produce an erect image.