PHYS 1260 Exam ECU with Questions and
100% Correct Answers
When waves from a pair of closely spaced slits arrive in phase - Answer a bright fringe is
produced
Interference colors in a soap bubble is evidence that the soap film - Answer has two
reflecting surfaces and thin [both of these]
In wave optics - Answer we make a distinction between coherent and
incoherent sources of light.
An incoherent source of light - Answer lacks a specific direction and has a relatively
large Δf.
A coherent source of light - Answer has a specific direction with a much smaller Δf.
A household light bulb is a/an - Answer incoherent source of visible radiation.
A laboratory laser is a/an - Answer coherent source of visible radiation.
Will you have a coherence over a time interval 10^-6 s for light? - Answer a stabilize
Ne-He laser
A wave with a longer coherence length is closer toa perfect - Answer sinusoidal wave
, If you have two waves and they are in phase - Answer Their amplitudes adds and you
get a bright fringe.
Rainbow - Answer *dispersion* of sunlight into a continuous distribution of colors
according to wavelength, produced by the refraction and reflection of sunlight by
water droplets in the sky
According to the special theory of relativity, while traveling at a very high speed
your pulse rate - Answer remains unchanged
An observer on the planet sees a contracted spaceship, while an observer on
the spaceship sees - Answer a contracted planet
According to Einstein's theory of special relativity - Answer space and time are
aspects of each other, and energy and mass are aspects of each other [both of these]
Comparing the light from a glowing tube of neon gas and the beam of a helium-
neon laser, there is a greater number of spectral lines in light from the - Answer
neon gas tube
According to Louis de Broglie, a material particle has - Answer particles and waves
properties [both of these]
The more we know about a particle's position, the less we know about its - Answer
speed, momentum, and kinetic energy [all of these]
When an electron de-excites from the third quantum level to the second, and then to
the ground state, two photons are emitted. The sum of the emitted frequencies equals
100% Correct Answers
When waves from a pair of closely spaced slits arrive in phase - Answer a bright fringe is
produced
Interference colors in a soap bubble is evidence that the soap film - Answer has two
reflecting surfaces and thin [both of these]
In wave optics - Answer we make a distinction between coherent and
incoherent sources of light.
An incoherent source of light - Answer lacks a specific direction and has a relatively
large Δf.
A coherent source of light - Answer has a specific direction with a much smaller Δf.
A household light bulb is a/an - Answer incoherent source of visible radiation.
A laboratory laser is a/an - Answer coherent source of visible radiation.
Will you have a coherence over a time interval 10^-6 s for light? - Answer a stabilize
Ne-He laser
A wave with a longer coherence length is closer toa perfect - Answer sinusoidal wave
, If you have two waves and they are in phase - Answer Their amplitudes adds and you
get a bright fringe.
Rainbow - Answer *dispersion* of sunlight into a continuous distribution of colors
according to wavelength, produced by the refraction and reflection of sunlight by
water droplets in the sky
According to the special theory of relativity, while traveling at a very high speed
your pulse rate - Answer remains unchanged
An observer on the planet sees a contracted spaceship, while an observer on
the spaceship sees - Answer a contracted planet
According to Einstein's theory of special relativity - Answer space and time are
aspects of each other, and energy and mass are aspects of each other [both of these]
Comparing the light from a glowing tube of neon gas and the beam of a helium-
neon laser, there is a greater number of spectral lines in light from the - Answer
neon gas tube
According to Louis de Broglie, a material particle has - Answer particles and waves
properties [both of these]
The more we know about a particle's position, the less we know about its - Answer
speed, momentum, and kinetic energy [all of these]
When an electron de-excites from the third quantum level to the second, and then to
the ground state, two photons are emitted. The sum of the emitted frequencies equals
