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PHY101 Quiz No 02
Author Message
06-13-2014, 06:37 PM
Post: #3
**SEO expert** Offline [ Member From :Nov 2012]
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RE: PHY101 Quiz No 02
Question # 1 of 10 ( Start time: 09:42:03 PM ) Total Marks: 1
A laser in a compact disc player generates light that has a wavelength of 780 nm in air. The light then enters into the plastic of a CD. If the index of refraction of plastic is 1.55, the speed of this light once enter the plastic is ________.
Select correct option:

3.00 x10^8 m/s
1.94 x 10^8 m/s (Correct)
4.29 x 10^8 km/h
3.00 x 10^8 km/h

Question # 2 of 10 ( Start time: 09:42:41 PM ) Total Marks: 1
The quantum number ms is most closely associated with what property of the electron in an atom?
Select correct option:

Magnitude of the orbital angular momentum
Energy
z component of the spin angular momentum (Correct)
z component of the orbital angular momentum

Question # 3 of 10 ( Start time: 09:43:13 PM ) Total Marks: 1
Metal pipes, used to carry water, sometimes burst in the winter because:
Select correct option:

Metal contractst more han water
Outside of the pipe contracts more than the inside
Metal becomes brittle when cold
Water expands when it freezes (Correct)


Question # 4 of 10 ( Start time: 09:44:19 PM ) Total Marks: 1
An erect object is in front of a convex mirror a distance greater than the focal length. The image is:
Select correct option:

Real, inverted, and smaller than the object
Virtual, inverted, and larger than the object
Real, inverted, and larger than the object
Virtual, erect, and smaller than the object (Correct)

Question # 5 of 10 ( Start time: 09:45:48 PM ) Total Marks: 1
Select the correct statement:
Select correct option:

Ultraviolet light has a longer wavelength than infrared (Correct)
Blue light has a higher frequency than x rays
Radio waves have higher frequency than gamma rays
Gamma rays have higher frequency than infrared waves

Question # 6 of 10 ( Start time: 09:46:50 PM ) Total Marks: 1
A virtual image is one:
Select correct option:

toward which light rays converge but do not pass through
from which light rays diverge but do not pass through (Correct)
from which light rays diverge as they pass through
toward which light rays converge and pass through

Question # 7 of 10 ( Start time: 09:47:39 PM ) Total Marks: 1
The wavelength of light beam A is twice the wavelength of light beam B. The energy of a photon in beam A is:
Select correct option:

half the energy of a photon in beam B (Correct)
one-fourth the energy of a photon in beam B
equal to the energy of a photon in beam B
twice the energy of a photon in beam B

Question # 8 of 10 ( Start time: 09:49:09 PM ) Total Marks: 1
Evidence for the wave nature of matter is:
Select correct option:

Electron di?raction experiments of Davisson and Germer (Correct)
Thompson’s measurement of e/m
Young’s double slit experiment
The Compton s’ e?ect


Question # 9 of 10 ( Start time: 09:50:36 PM ) Total Marks: 1
Evidence that a gas consists mostly of empty space is the fact that:
Select correct option:

The density of a gas becomes much greater when it is liquefied (Correct)
Gases exert pressure on the walls of their containers
Gases are transparent
Heating a gas increases the molecular motion

Question # 10 of 10 ( Start time: 09:51:53 PM ) Total Marks: 1
In a photoelectric effect experiment at a frequency above cut off, the stopping potential is proportional to:
Select correct option:

the energy of the least energetic electron before it is ejected
the energy of the least energetic electron after it is ejected
the energy of the most energetic electron before it is ejected
the energy of the most energetic electron after it is ejected (Correct)


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.doc  Fall 2013_Quiz 01.doc (Size: 296.5 KB / Downloads: 10)

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Messages In This Thread
PHY101 Quiz No 02 - **SEO expert** - 06-12-2014, 05:43 PM
RE: PHY101 Quiz No 02 - Isha saman - 06-12-2014, 11:16 PM
RE: PHY101 Quiz No 02 - **SEO expert** - 06-13-2014 06:37 PM

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