The spaceship at S wishes to touch the surface
of the giant planet and proceed to point X in the
shortest distance possible. To what point P on
the planet surface should the
spaceship travel?
1.
2.
3.
4.
Point a
Point b
Point c
Actually, all yield the same total distance.
The spaceship at S wishes to touch the surface
of the giant planet and proceed to point X in the
shortest distance possible. To what point P on
the planet surface should the
spaceship travel?
1. Point a
2. Point b
3. Point c
4. Actually, all yield the same total distance.
In order that you are able to see a full-length
view of yourself, the minimum size for a
plane mirror must be
1. one-quarter your height.
2. one-half your height.
3. three-quarters your
height.
4. your full height.
5. … depends on your
distance.
In order that you are able to see a full-length
view of yourself, the minimum size for a
plane mirror must be
1. one-quarter your height.
2. one-half your height.
3. three-quarters your
height.
4. your full height.
5. … depends on your
distance.
To see more of her head in the mirror, she
1. should hold the mirror closer.
2. should hold the mirror farther away.
3. needs a bigger mirror.
To see more of her head in the mirror, she
1. should hold the mirror closer.
2. should hold the mirror farther away.
3. needs a bigger mirror.
1.
She takes a photograph of
her friend standing on the
bridge as shown. Which of
the two sketches more
accurately shows the
photograph of the bridge
and its reflection?
2.
1.
She takes a photograph of
her friend standing on the
bridge as shown. Which of
the two sketches more
accurately shows the
photograph of the bridge
and its reflection?
2.
Light rays bend as they
pass from air into water at
a non–90 degree angle.
This is refraction. Which
quantity doesn’t change when
light refracts?
1. Average speed of light
2. Material’s index
of refraction
3. Frequency of light
4. Wavelength of light
Light rays bend as they
pass from air into water at
a non–90 degree angle.
This is refraction. Which
quantity doesn’t change when
light refracts?
1. Average speed of light
2. Material’s index
of refraction
3. Frequency of light
4. Wavelength of light
Jose wishes to “spear” a fish
with a laser. In order to make
a direct hit, he should aim
the laser beam
1. above
2. below
3. directly at
the observed fish.
Jose wishes to “spear” a fish
with a laser. In order to make
a direct hit, he should aim
the laser beam
1. above
2. below
3. directly at
the observed fish.
Suppose you want to send a beam of laser light
to a space station above the atmosphere and
just above the horizon. You should aim your
laser
1. slightly higher than
2. slightly lower than
3. directly along
the line of sight to the space station.
Suppose you want to send a beam of laser light
to a space station above the atmosphere and
just above the horizon. You should aim your
laser
1. slightly higher than
2. slightly lower than
3. directly along
the line of sight to the space station.
A person who sees more clearly under water
than in air without eyeglasses is
1. nearsighted.
2. farsighted.
3. neither.
A person who sees more clearly under water
than in air without eyeglasses is
1. nearsighted.
2. farsighted.
3. neither.
The photographer
wishes to photograph
the rainbow but is
disappointed to find the
camera’s angle of view
is not wide enough to
see the whole rainbow.
To get the whole rainbow, she would be better
off if she were
1. closer to the rainbow.
2. farther from the rainbow.
3. … neither, for she’d get the same portion
of rainbow in either case.
The photographer
wishes to photograph
the rainbow but is
disappointed to find the
camera’s angle of view
is not wide enough to
see the whole rainbow.
To get the whole rainbow, she would be better off
if she were
1. closer to the rainbow.
2. farther from the rainbow.
3. … neither, for she’d get the same portion
of rainbow in either case.