OPTICS SCIENCE OLYMPIAD EXAM ACTUAL

OPTICS SCIENCE OLYMPIAD EXAM (ACTUAL / )

QUESTIONS AND VERIFIED CORRECT ANSWERS

The law of reflection states that the incident ray, the reflected ray, and the normal to the surface of the mirror all lie in the same plane. Furthermore, the angle of reflection is equal to the angle of incidence .

specular reflection is defined as light reflected from a smooth surface at a definite angle.

Ray tracing a technique for generating an image by tracing the path of light through pixels in an image plane and simulating the effects of its encounters with virtual objects.

Focal length the distance between the center of a lens or curved mirror and its focus.Long is nearsighted, short is farsighted

Real Object a real image is an image which is located in the plane of convergence for the light rays that originate from a given object. If a screen is 1 / 2

placed in the plane of a real image the image will generally become visible on the screen.

Images real/virtual a real image has to be where the light is, which means in front of a mirror, or behind a lens.) Virtual images are formed by diverging lenses or by placing an object inside the focal length of a converging lens.

Images erect one that appears right-side up. It is an image in which directions are the same as those in the object, in contrast to an inverted image. Some telescopes and other devices, such as the camera obscura present an inverted image on the viewing surface.

Images inverted in which up and down, as well as left and right, are interchanged; that is, an image that results from rotating the object 180° about a line from the object to the observer; such images are formed by most astronomical telescopes. Also known as reversed image.

Images magnified The process of enlarging the size of something; The ratio of the size of an image to the size of an object.

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