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 a2. Point b3. Point c4. Actually, all yield the same total distance.

1. Point a2. Point b3. Point c4. 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?

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.

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

To see more of her head in the mirror, she1. should hold the mirror closer.2. should hold the mirror farther away.3. needs a bigger mirror.

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

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?

1.

2.

1.

2.

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?

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 light2. Material’s index

of refraction3. Frequency of light4. Wavelength of light

1. Average speed of light2. Material’s index

of refraction3. Frequency of light4. 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?

Jose wishes to “spear” a fish with a laser. In order to make a direct hit, he should aim the laser beam

1. above2. below3. directly at the observed fish.

1. above2. below3. 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

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 than2. slightly lower than3. directly along the line of sight to the space station.

1. slightly higher than2. slightly lower than3. 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

A person who sees more clearly under water than in air without eyeglasses is

1. nearsighted.2. farsighted.3. neither.

1. nearsighted.2. farsighted.3. neither.

A person who sees more clearly under water than in air without eyeglasses is

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 were1. closer to the rainbow.2. farther from the rainbow.3. … neither, for she’d get the same portion of rainbow in either case.

To get the whole rainbow, she would be better off if she were1. 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.