WSS10-02010 Geometric Optics and Optical Instruments

When an object is placed in front of a plane mirror the image is:

• upright, magnified, and real

• upright, the same size, and virtual

• inverted, demagnified, and real

• inverted, magnified, and virtual

A candle is placed in front of a concave mirror. The image produced by the mirror is:

• real, inverted, and magnified

• real, inverted, and demagnified

• virtual, upright, and magnified

• virtual, upright, and demagnified

A candle is placed in front of a convex mirror. The image produced by the mirror is:

• real, inverted, and magnified

• real, inverted, and demagnified

• virtual, upright, and magnified

• virtual, upright, and demagnified

The magnification of a microscope is increased when ________________

• the focal length of the objective lens is increased.

• the focal length of the objective lens is decreased.

• the focal length of the eyepiece is increased.

• the distance between the objective lens and eyepiece is decreased.

The fundamental resolution of an optical instrument is set by _______________

• the accuracy to which lenses can be polished.

• the fact that white light is composed of all visible colors.

• the fact that all types of glass have nearly the same index of refraction.

• the wave of nature of light.

Which statement is TRUE about the image of concave mirror?

• Always virtual and upright

• Always real and reduced

• Always real and inverted

• Always virtual and enlarged

Which of the following optical instrument uses 2 convex lenses to make a smaller object larger?

• Telescope

• Oscilloscope

• Microscope

• Camera

A human eye employs a _________ lens to form __________ images.

• converging, real

• converging, virtual

• diverging, real

• diverging, virtual

A telescope is an optical device used to

• view distant object

• view near object

• diminish large object

• diminish small object

Which of the following can be done by a camera but not by the human eye?

• form images of objects

• adjust to dim and bright lights

• change focus from short to long distances

• give a permanent record of the scenes on which it is focused