81.
When a wave passes through an opening, some of the wave is bent. This phenomenon is called
A
polarization
B
reflection
C
diffraction
D
refraction
Loading practice questions
Browse topic-based Higher Physics practice sets.
418 practice sets · Page 5 of 21
When a wave passes through an opening, some of the wave is bent. This phenomenon is called
polarization
reflection
diffraction
refraction
When plane waves pass through an opening, the wave fronts will not change much if the opening is
the same size as the wavelength
wide compared to the wavelength
narrow compared to the wavelength
none of the above
Which of the following is a consequence of the refraction of light?
rainbows
mirages
internal reflection
all of the above
A beam of light travels fastest in
air
water
plastic
glass
The spectrum produced by a prism or a raindrop is evidence that the average speed of light in the material depends on the lights
transmission qualities
color
wave nature
particle nature
Different colors of light travel at different speeds in a transparent medium. In a vacuum, different colors of light travel at
the same speed
different speeds
both a and b
none of the above
The effect that we call a mirage has most to do with
reflection
refraction
diffraction
interference
When you see a wet spot mirage on the road in front of you, you are most likely seeing
water
hot air
a figment of your imagination
sky
You can hear noises a long distance away over water at night because
of lowered temperature
water conducts sound better at night
sound is reflected off water more efficiently at night
of refraction of sound in air
Refraction occurs
when a wave changes speed
only at a wave front
at any unpredictable time
only with light waves
Refraction is caused by
different wave speeds
more than one reflection
displaced images
bending
When you look at yourself in a pocket mirror and then hold the mirror farther away, you see
less of yourself
more of yourself
the same amount of yourself
none of the above
When monochromatic light shines through two closely spaced narrow slits and onto a screen some distance away, the pattern on the screen has
no light in it
two large bright spots
alternating dark and light bands
one large bright spot
The shortest plane mirror in which you can see your entire image
is half your height
is twice your height
is equal to your height
cannot be determined
The reason we can read print from any direction is that
the white part of a page reflects light in all directions
letters emit black light in all directions
letters absorb black light from all directions
all of the above
The critical angle for a light from the bottom of a swimming pool shining upward toward the pools surface is the angle
where light is refracted so it just skims the pool surface
43 degrees
at which all light is refracted out of the pool
42 degrees
It is difficult to see the roadway from a car on a rainy night because the road surface
is obscured by the rain itself
that is normally a diffuse reflector when dry becomes a mirror surface when wet
absorbs the light more when wet
scatters light in all directions
In a curved optical fiber, light
gains energy in each internal reflection
internally reflects in a succession of straight-line paths
bends and follows the curve of the fiber
Diffuse reflection occurs when the size of surface irregularities is
larger than 1 m in diameter
large compared to the wavelength of the light used
small compared to the wavelength of the light used
larger than 1 cm in diameter
An echo occurs when sound
is transmitted through a surface
is reflected from a distant surface
changes speed when it strikes a distant surface
all of the above