Dispersion effects - Questions

In a prism
In a window pane
In a rainbow

A beam of white light passes through a prism and is deflected downward to a screen where it makes a rainbow of colors. The color at the top of the rainbow is
(A) violet.
(B) green.
(C) red.
(D) yellow.

A beam of white light passes through a prism and is deflected downward to a screen where it makes a rainbow of colors. The color at the top of the rainbow is
(A) violet. --- No.
Violet is bent the most. It will be on the bottom.

A beam of white light passes through a prism and is deflected downward to a screen where it makes a rainbow of colors. The color at the top of the rainbow is
(B) green. --- No.
Green is in the middle of the visible spectrum.

A beam of white light passes through a prism and is deflected downward to a screen where it makes a rainbow of colors. The color at the top of the rainbow is
(C) red. --- Yes
Red is bent the least.

A beam of white light passes through a prism and is deflected downward to a screen where it makes a rainbow of colors. The color at the top of the rainbow is
(D) yellow. --- No.
Yellow is near the middle of the spectrum.

103.1

Suppose that you look through a glass face mask at an underwater scene. Air is on one side of the glass pane and water on the other. Compare what you would see to the view through a thick (30 - 45 degree) prism. Around bright objects at the edges of your field of vision, you expect to see
(A) some colored fringes but less than through the prism.
(B) no colored fringes.
(C) more colored fringes than through the prism.
(D) dark fringes.

Suppose that you look through a glass face mask at an underwater scene. Air is on one side of the glass pane and water on the other. Compare what you would see to the view through a thick (30 - 45 degree) prism. Around bright objects at the edges of your field of vision, you expect to see
(A) some colored fringes but less than through the prism.
Yes. --- The glass-air boundary disperses light more than the glass-water boundary, so the dispersions do not cancel.

Suppose that you look through a glass face mask at an underwater scene. Air is on one side of the glass pane and water on the other. Compare what you would see to the view through a thick (30 - 45 degree) prism. Around bright objects at the edges of your field of vision, you expect to see
(B) no colored fringes.
No. --- The glass-air boundary disperses light more than the glass-water boundary, so the dispersions do not cancel.

Suppose that you look through a glass face mask at an underwater scene. Air is on one side of the glass pane and water on the other. Compare what you would see to the view through a thick (30 - 45 degree) prism. Around bright objects at the edges of your field of vision, you expect to see
(C) more colored fringes than through the prism.
No. --- In a prism, the dispersions add. Here they partly cancel.

Suppose that you look through a glass face mask at an underwater scene. Air is on one side of the glass pane and water on the other. Compare what you would see to the view through a thick (30 - 45 degree) prism. Around bright objects at the edges of your field of vision, you expect to see
(D) dark fringes.
No. --- Only color dispersion is happening here.

It has just stopped raining and you see a rainbow which is a full half-circle in the western sky. What time is it?
(A) 9:00 am.
(B) 6:00 pm.
(C) 6:00 am.
(D) 3:00 pm.

It has just stopped raining and you see a rainbow which is a full half-circle in the western sky. What time is it?
(A) 9:00 am. --- No.
With the sun well above the horizon, the center of the circle would be well below the horizon.

It has just stopped raining and you see a rainbow which is a full half-circle in the western sky. What time is it?
(B) 6:00 pm. --- No.
The sun sets in the west, so the rainbow would be in the east.

It has just stopped raining and you see a rainbow which is a full half-circle in the western sky. What time is it?
(C) 6:00 am. --- Yes.
With the sun rising on the eastern horizon, the center of the rainbow would be on the western horizon.

It has just stopped raining and you see a rainbow which is a full half-circle in the western sky. What time is it?
(D) 3:00 pm. --- No.
With the sun well above the horizon, the center of the circle would be well below the horizon.

Dispersion effects - Questions In a prism In a window pane In a rainbow

A beam of white light passes through a prism and is deflected downward to a screen where it makes a rainbow of colors. The color at the top of the rainbow is (A) violet. (B) green. (C) red. (D) yellow.

A beam of white light passes through a prism and is deflected downward to a screen where it makes a rainbow of colors. The color at the top of the rainbow is (A) violet. --- No. Violet is bent the most. It will be on the bottom.

A beam of white light passes through a prism and is deflected downward to a screen where it makes a rainbow of colors. The color at the top of the rainbow is (B) green. --- No. Green is in the middle of the visible spectrum.

A beam of white light passes through a prism and is deflected downward to a screen where it makes a rainbow of colors. The color at the top of the rainbow is (C) red. --- Yes Red is bent the least.

A beam of white light passes through a prism and is deflected downward to a screen where it makes a rainbow of colors. The color at the top of the rainbow is (D) yellow. --- No. Yellow is near the middle of the spectrum.

It has just stopped raining and you see a rainbow which is a full half-circle in the western sky. What time is it? (A) 9:00 am. (B) 6:00 pm. (C) 6:00 am. (D) 3:00 pm.

It has just stopped raining and you see a rainbow which is a full half-circle in the western sky. What time is it? (A) 9:00 am. --- No. With the sun well above the horizon, the center of the circle would be well below the horizon.

It has just stopped raining and you see a rainbow which is a full half-circle in the western sky. What time is it? (B) 6:00 pm. --- No. The sun sets in the west, so the rainbow would be in the east.

It has just stopped raining and you see a rainbow which is a full half-circle in the western sky. What time is it? (C) 6:00 am. --- Yes. With the sun rising on the eastern horizon, the center of the rainbow would be on the western horizon.

It has just stopped raining and you see a rainbow which is a full half-circle in the western sky. What time is it? (D) 3:00 pm. --- No. With the sun well above the horizon, the center of the circle would be well below the horizon.

Dispersion effects - Questions

In a prism
In a window pane
In a rainbow

A beam of white light passes through a prism and is deflected downward to a screen where it makes a rainbow of colors. The color at the top of the rainbow is
(A) violet.
(B) green.
(C) red.
(D) yellow.

A beam of white light passes through a prism and is deflected downward to a screen where it makes a rainbow of colors. The color at the top of the rainbow is
(A) violet. --- No.
Violet is bent the most. It will be on the bottom.

A beam of white light passes through a prism and is deflected downward to a screen where it makes a rainbow of colors. The color at the top of the rainbow is
(B) green. --- No.
Green is in the middle of the visible spectrum.

A beam of white light passes through a prism and is deflected downward to a screen where it makes a rainbow of colors. The color at the top of the rainbow is
(C) red. --- Yes
Red is bent the least.

A beam of white light passes through a prism and is deflected downward to a screen where it makes a rainbow of colors. The color at the top of the rainbow is
(D) yellow. --- No.
Yellow is near the middle of the spectrum.

It has just stopped raining and you see a rainbow which is a full half-circle in the western sky. What time is it?
(A) 9:00 am.
(B) 6:00 pm.
(C) 6:00 am.
(D) 3:00 pm.

It has just stopped raining and you see a rainbow which is a full half-circle in the western sky. What time is it?
(A) 9:00 am. --- No.
With the sun well above the horizon, the center of the circle would be well below the horizon.

It has just stopped raining and you see a rainbow which is a full half-circle in the western sky. What time is it?
(B) 6:00 pm. --- No.
The sun sets in the west, so the rainbow would be in the east.

It has just stopped raining and you see a rainbow which is a full half-circle in the western sky. What time is it?
(C) 6:00 am. --- Yes.
With the sun rising on the eastern horizon, the center of the rainbow would be on the western horizon.

It has just stopped raining and you see a rainbow which is a full half-circle in the western sky. What time is it?
(D) 3:00 pm. --- No.
With the sun well above the horizon, the center of the circle would be well below the horizon.