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July 30, 2014

Homework Help: lOTS OF PHYSICS :)

Posted by James on Wednesday, April 18, 2012 at 7:56pm.

41.


Is the speed of light constant as it passes through transparent materials?










Yes, the speed of is always constant



No, light travels at different speeds through different materials




42.


A lens that causes light to diverge is










A converging lens



A diverging lens





Fish-eye lens






43.


An image formed by a magnifying glass is larger than life. The reflected rays of light from the object appear to converge at a location outside of the object. The image formed is a










Real image



Fake image





Virtual image



Mirage




44.


An image formed by rays of light that converge at the location of the object is a










Real image



Fake image





Virtual image



Mirage








Part 10-1

Choose the best answer
(Each question is worth one point)


45.


Huygen's principle suggests that










Wave fronts are composed of only single waves



Wave fronts are composed of many smaller wave fronts





Wave fronts are always the same size






46.


Which wavelength is easiest to diffract?










Long wavelengths (low frequencies)



Short wavelengths (high frequencies)





All wavelengths diffracts just the same






47.


When the crest of one wave aligns with the trough of another wave the result is










Constructive interference



Destructive interference




48.


Two Polaroid filters with their axes at right angles










Transmit all light



Transmit 50% of all incident light





Transmit no light






49.


Holograms are created










Using laser light



Using two sets of wave fronts





By using interference patterns



All of the above








Part 11-1

Choose the best answer
(Each question is worth one point)


50.


An excited atom temporarily has an electron farther from its nucleus. This electron is at










A higher energy level



Lower energy level





Peace with the universe






51.


The frequency of a photon is directly proportional to










Its speed



Its energy





Its wavelength






52.


An emission spectrum can be used to










Create energy



Identify elements





Store energy



Transform elements




53.


The dominant frequency in incandescent light is called










The sharp frequency



The strong frequency





The peak frequency






54.


Dark lines in an absorption spectrum are called










Spectral lines



Silent bands





Absorption lines










Part 12-1

Choose the best answer
(Each question is worth one point)


55.


Radiating energy travels in discrete packages called










Compliments



Photoelectrons





Quanta



Particles




56.


A quanta of light is










A photoelectron



A wave





A photon



A particle




57.


Why does the world appear smooth and continuous rather than grainy as described by quantum physics










The world appears smooth and continuous because we are not sensitive to the small scale microworld of the quanta



The world actually is smooth and continuous





Quantum physics is incorrect



Both b and c




58.


The individual energies of photons vary with










The frequencies of electromagnetic waves present



The number of photons present




59.


The photoelectric effect can be explained










Only in the "light as particles" view of light



Only in the "light as waves" view of light





Neither a or b






60.


The property of interference can be explained










Only in the "light as particles" view of light



Only in the "light as waves" view of light





Neither a or b

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