#### Transcript Chapter29A Clicker questions.

```Chapter 29 A
Light Waves
Single slit diffraction
and
double slit interferance
According to Huygens’ principle,
every point on a wave
a.
b.
c.
d.
is a diffraction source.
is the superposition of every other wave.
is perpendicular to the rays of the waves.
behaves as a source of new waves.
According to Huygens’ principle,
every point on a wave
a.
b.
c.
d.
is a diffraction source.
is the superposition of every other wave.
is perpendicular to the rays of the waves.
behaves as a source of new waves.
Diffraction is more pronounced for
waves passing
a.
b.
c.
d.
through small openings.
through large openings.
from one medium to another.
Diffraction is more pronounced for
waves passing
a.
b.
c.
d.
through small openings.
through large openings.
from one medium to another.
Diffraction can occur for
a.
b.
c.
d.
sound.
ultrasound.
light.
waves of all kinds.
Diffraction can occur for
a.
b.
c.
d.
sound.
ultrasound.
light.
waves of all kinds.
For viewing tiny objects in an optical
microscope, diffraction is
a.
b.
c.
d.
a hindrance.
Sometimes either of these.
not a factor.
For viewing tiny objects in an optical
microscope, diffraction is
a.
b.
c.
d.
a hindrance.
Sometimes either of these.
not a factor.
A diffraction grating relies on light
a.
b.
c.
d.
interference.
variations in amplitude.
variations in brightness.
being composed of photons.
A diffraction grating relies on light
a.
b.
c.
d.
interference.
variations in amplitude.
variations in brightness.
being composed of photons.
When light undergoes interference,
it can sometimes
a.
b.
c.
d.
increase in amplitude.
cancel completely.
Both of these.
None of these.
When light undergoes interference,
it can sometimes
a.
b.
c.
d.
increase in amplitude.
cancel completely.
Both of these.
None of these.
Explanation: Light can build in amplitude by constructive
interference and can cancel by destructive interference.
When light undergoes interference,
the quantity most affected is its
a.
b.
c.
d.
frequency.
amplitude.
wave nature.
phase.
When light undergoes interference,
the quantity most affected is its
a.
b.
c.
d.
frequency.
amplitude.
wave nature.
phase.
Interference can be exhibited by
a.
b.
c.
d.
sound waves.
light waves.
standing waves.
all waves.
Interference can be exhibited by
a.
b.
c.
d.
sound waves.
light waves.
standing waves.
all waves.
```