PHYS 1260 EXAM 3 REVIEW QUESTIONS
Most of the waves in the electromagnetic spectrum are - Answers - invisible
Light travels from one place to another along a path of least - Answers - time
When a pulse of white light is incident on a glassprism, the first color to emerge is -
Answers - red
The index of refraction for crown glass, common in eyeglasses, is 1.52. The index of
refraction of a particular plastic lens is 1.76. Light bends more in the - Answers - plastic
lens
The image of the "infinitely-far-away" Sun produced by a converging lens appears -
Answers - at the focal point.
A "pinhole camera" has no lens. The tiny pinhole opening ensures that rays of light from
different parts of an object - Answers - don't overlap
In a converging lens, objects infinitely far away are focused - Answers - at the focal
point
When taking a photo of a nearby flower, your camera lens should be set - Answers -
farther than one focal length from the photosensitive surface.
Which of the following can be projected onto aviewing screen? - Answers - real image
A spectroscope is used to analyze a sample by separating its components into a
spectrum. If lens #1 were omitted, the resulting spectrum would be - Answers - much
dimmer
What type of lens would we need to correct for aperson's nearsightedness? - Answers -
diverging
A magnifying glass has a certain focal length. Compared to this magnifier, a second
glass with a thicker lens will have a focal length that is - Answers - shorter
The ocular in a microscope behaves like a(n) - Answers - magnifying glass
Which of the following focal lengths would beappropriate for the ocular of an
astronomicaltelescope: 2.5 cm, −2.5 cm, 5 cm, −10 cm, 40 cm - Answers - 2.5 cm, 5 cm
Electromagnetic waves consist of - Answers - oscillating electric and magnetic fields.
Most of the waves in the electromagnetic spectrum are - Answers - invisible
Light travels from one place to another along a path of least - Answers - time
When a pulse of white light is incident on a glassprism, the first color to emerge is -
Answers - red
The index of refraction for crown glass, common in eyeglasses, is 1.52. The index of
refraction of a particular plastic lens is 1.76. Light bends more in the - Answers - plastic
lens
The image of the "infinitely-far-away" Sun produced by a converging lens appears -
Answers - at the focal point.
A "pinhole camera" has no lens. The tiny pinhole opening ensures that rays of light from
different parts of an object - Answers - don't overlap
In a converging lens, objects infinitely far away are focused - Answers - at the focal
point
When taking a photo of a nearby flower, your camera lens should be set - Answers -
farther than one focal length from the photosensitive surface.
Which of the following can be projected onto aviewing screen? - Answers - real image
A spectroscope is used to analyze a sample by separating its components into a
spectrum. If lens #1 were omitted, the resulting spectrum would be - Answers - much
dimmer
What type of lens would we need to correct for aperson's nearsightedness? - Answers -
diverging
A magnifying glass has a certain focal length. Compared to this magnifier, a second
glass with a thicker lens will have a focal length that is - Answers - shorter
The ocular in a microscope behaves like a(n) - Answers - magnifying glass
Which of the following focal lengths would beappropriate for the ocular of an
astronomicaltelescope: 2.5 cm, −2.5 cm, 5 cm, −10 cm, 40 cm - Answers - 2.5 cm, 5 cm
Electromagnetic waves consist of - Answers - oscillating electric and magnetic fields.
