PHYS 1260 Exam 4 ECU Questions
with Correct Answers 100% PASS
Light from two closely spaced stars cannot produce a steady interference pattern
due to - CORRECT ANSWER-incoherence
In the double slit experiment, fringes are more widely spaced when illumination is
with monochromatic (single color) - CORRECT ANSWER-longer wavelength
light
When waves from a pair of closely spaced slits arrive in phase - CORRECT
ANSWER-a bright fringe is produced
Interference colors in a soap bubble is evidence that the soap film - CORRECT
ANSWER-has two reflecting surfaces and thin [both of these]
In wave optics - CORRECT ANSWER-we make a distinction between coherent
and incoherent sources of light.
An incoherent source of light - CORRECT ANSWER-lacks a specific direction
and has a relatively large Δf.
, A coherent source of light - CORRECT ANSWER-has a specific direction with a
much smaller Δf.
A household light bulb is a/an - CORRECT ANSWER-incoherent source of
visible radiation.
A laboratory laser is a/an - CORRECT ANSWER-coherent source of visible
radiation.
Will you have a coherence over a time interval 10^-6 s for light? - CORRECT
ANSWER-a stabilize Ne-He laser
A wave with a longer coherence length is closer toa perfect - CORRECT
ANSWER-sinusoidal wave
If you have two waves and they are in phase - CORRECT ANSWER-Their
amplitudes adds and you get a bright fringe.
Rainbow - CORRECT 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 - CORRECT ANSWER-remains unchanged
An observer on the planet sees a contracted spaceship, while an observer on the
spaceship sees - CORRECT ANSWER-a contracted planet
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
with Correct Answers 100% PASS
Light from two closely spaced stars cannot produce a steady interference pattern
due to - CORRECT ANSWER-incoherence
In the double slit experiment, fringes are more widely spaced when illumination is
with monochromatic (single color) - CORRECT ANSWER-longer wavelength
light
When waves from a pair of closely spaced slits arrive in phase - CORRECT
ANSWER-a bright fringe is produced
Interference colors in a soap bubble is evidence that the soap film - CORRECT
ANSWER-has two reflecting surfaces and thin [both of these]
In wave optics - CORRECT ANSWER-we make a distinction between coherent
and incoherent sources of light.
An incoherent source of light - CORRECT ANSWER-lacks a specific direction
and has a relatively large Δf.
, A coherent source of light - CORRECT ANSWER-has a specific direction with a
much smaller Δf.
A household light bulb is a/an - CORRECT ANSWER-incoherent source of
visible radiation.
A laboratory laser is a/an - CORRECT ANSWER-coherent source of visible
radiation.
Will you have a coherence over a time interval 10^-6 s for light? - CORRECT
ANSWER-a stabilize Ne-He laser
A wave with a longer coherence length is closer toa perfect - CORRECT
ANSWER-sinusoidal wave
If you have two waves and they are in phase - CORRECT ANSWER-Their
amplitudes adds and you get a bright fringe.
Rainbow - CORRECT 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 - CORRECT ANSWER-remains unchanged
An observer on the planet sees a contracted spaceship, while an observer on the
spaceship sees - CORRECT ANSWER-a contracted planet
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
