In which case(s) is there constructive interference for two light waves meeting
ID: 1492714 • Letter: I
Question
In which case(s) is there constructive interference for two light waves meeting at the same point at a given instant? (Select all that apply.)
2.
In which situation(s) is there destructive interference when two waves intersect at one point? (At an instant of time.)
3.
When light goes through a very narrow slit, it spreads out from that slit in all directions beyond the slit due to:
4.
Light encounters two very narrow slits closely spaced together. Constructive interference of light coming from these two slits will occur when
5.
Equations 17.7 and 17.8 depend on which assumption?
6.
You shine both red and blue light through a double slit. What can you say about their interference patterns?
7.
You compare a double-slit interference pattern with the interference pattern due to a diffraction grating of the same spacing as that of the double-slit. The most noticeable difference would be that:
In which case(s) is there constructive interference for two light waves meeting at the same point at a given instant? (Select all that apply.)
A) Both waves are at their maximumB) One wave is at its minimum, one wave is at zero.
C) One wave is at its maximum, one wave is at zero.
D) One wave is at its maximum, the other is at its minimum
E) Both waves are at their minimum
2.
In which situation(s) is there destructive interference when two waves intersect at one point? (At an instant of time.)
A) One wave is at a maximum, the other is at zeroB) One wave is at a minimum, the other is at zero
C) Both waves are at a maximum
D) Both waves are at a minimum
E) One wave is at a minimum; the other is at a maximum
3.
When light goes through a very narrow slit, it spreads out from that slit in all directions beyond the slit due to:
A) dispersionB) refraction
C) reflection
D) diffraction
E) interference
4.
Light encounters two very narrow slits closely spaced together. Constructive interference of light coming from these two slits will occur when
A) the light from one slit has to travel a distance that is longer than that traveled by the light from the other slit equal to half the wavelength of the lightB) the wavelength of the light equals the width of the slits
C) the wavelength of the light equals the separation of the slits
D) light from one slit at its crest encounters light from the other slit at its trough
E) the light from one slit has to travel a distance that is longer than that traveled by the light from the other slit equal to twice the wavelength of the light
5.
Equations 17.7 and 17.8 depend on which assumption?
A) the slits are much wider than the wavelength of the lightB) large angles (in radians)
C) The screen is very close to the slits
D) small angles (in radians)
6.
You shine both red and blue light through a double slit. What can you say about their interference patterns?
A) The red bright fringes will be closer together than will be the blue bright fringes.B) The red and blue bright fringes will be the same distance apart from each other.
C) The blue bright fringes will be closer together than will be the red bright fringes.
7.
You compare a double-slit interference pattern with the interference pattern due to a diffraction grating of the same spacing as that of the double-slit. The most noticeable difference would be that:
A) The peaks of the diffraction grating are much closer together than for the double-slitB) The peaks of the diffraction grating are much sharper than that for the double-slit
C) The center point is a maximum, not a minimum
D) The center point is a minimum, not a maximum
E) The peaks of the diffraction grating are much farther apart than for the double-slit
F) The peaks of the diffraction grating are much broader than that for the double-slit
Explanation / Answer
1.A,C
2.B,D,E
3.D
4.E
5.D
6.C
7.E
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