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Optics - Section 6.2 Quiz
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Which optical instrument bends light in order to view distant objects?
Refracting telescope
Reflecting telescope
Refracting microscope
Reflecting microscope
A problem that can occur with large refracting telescopes is
the lens can sag under its own weight, distorting the image.
the mirror can sag under its own weight, distorting the image.
the mirror can be difficult to focus.
the light rays passing through the lens tend to diverge.
The human eye and a digital camera have many parts that have similar functions. Which of the following camera-eye pairs have similar functions?
Diaphragm - iris
Shutter - retina
CCD detector - lens
Focusing ring - retina
Which of the following parts of the camera has the same function as the lens in the eye?
Lens
Focusing ring
Diaphragm
Shutter
Which of the following parts of the eye has the same function as the CCD detector in a digital camera?
Retina
Lens
Iris
Pupil
Which of the following are the same in both the camera and the human eye?
The image appears upside-down where it is detected.
The focusing is accomplished by moving the lens back and forth.
Reducing the light that enters is done by blocking it before it reaches the lens.
The lens can be flexed and reshaped to allow focusing.
Laser eye surgery changes the shape of the
cornea.
retina.
lens.
iris.
Which of the following statements about laser light is not true?
Laser light contains more than one wavelength of light.
Laser light can travel long distances without spreading out.
Refracted laser light does not produce the colours of the rainbow.
The crests and troughs of laser light waves are aligned.
Light rays travel in optical fibres for long distances without loss or absorption. This is accomplished inside the fiber because of
total internal reflection.
total internal refraction.
lens fibre enhancement.
light wave transmission.
The CCD (image sensor) of a digital camera forms an image with pixels, small regions that form a tiny part of the whole image. What structure performs a similar function in the human eye?
