Physics 2 Ch. 28 HW – Flashcards

When a light ray in air enters water at 15 degrees from the normal, it:

Light refracts when traveling from air into glass because of a change in light's:

The shortest plane mirror in which you can see your entire image is:

You photograph the image of your little sister, who stands 2 meters in front of a plane mirror. Holding the camera beside her head, the distance to her image is:

When light reflects from a surface, there is not a change in its:

Your image in a plane mirror is:

The amount of light reflected from the front surface of a common windowpane is about:

Object and image for a plane mirror occur:

Fermat's principle could be the principle of least distance for:

Light travels from one place to another along a path of least:

Light is reflected when:

Refraction occurs when light passing from one medium to another:

95% of light incident on a mirror is reflected. How much light is reflected when 3 of these mirrors are arranged so light reflects from one after the other?

Standing at the shore of a still lake, the reflected view of a scenery on the other side of the lake is the view you would see if you were upside down with your eye in the line of sight:

It is difficult to see the roadway when driving on a rainy night mainly because:

If you look at yourself in a pocket mirror, then hold the mirror farther away, you see:

A mirage occurs for road surfaces that are most often:

As monochromatic light passes from air to glass and back to air, changes occur in its:

A person who sees more clearly under water without eyeglasses or a face mask is:

To send a beam laser-light beam to a space station just above the atmosphere near the horizon, aim your laser:

To "spear" a red fish with a red laser beam and compensate for refraction, aim your laser:

Stephanie dips a glass rod into vegetable oil. The submerged part of the rod can't be sen because:

The Sun's elliptical shape at sunset can be adequately explained by:

A fish above the surface of water will see better in air if it has goggles that are:

Atmospheric refraction makes the daylight hours a bit:

The average speed of light is greatest in:

The twinkling of the stars is a result of atmospheric:

When light passes through common windowpane, its angle of emergence is:

What are consequences of different speeds of light in different media?

Light of different colors in a vacuum travel at:

The Moon's redness during a lunar eclipse is due to:

When a colored light in air shines on water and is refracted, its wavelength:

Light travels slower in a lens having a:

Magnification by a lens would be greater if light:

In optical fibers of uniform density, light actually:

At night an underwater scuba diver aims a flashlight beam toward the surface at 15 degrees to the normal. Upon emerging into the air, the beam angle will be:

A diver shines a light upward to the surface of a smooth pond at 20 degrees to the normal. Most light passes into the air above while the part that reflects back into the water makes an angle to the normal of:

When a light beam emerges from water into air, light speed:

When you are beneath the surface of water and looking upward, light from above is seen:

If you view a rainbow out of your rainbow while riding in a train, you'll see that:

The secondary rainbow is dimmer than the primary rainbow mainly because:

Rainbows are not usually seen as complete circles because:

The type of lens that spreads parallel light is a:

The image of the "infinitely-far-away" Sun produced by a converging lens appears:

When the tiny hole in a pinhole camera is made larger, the image is:

Your vision is sharpest when your pupil is:

Which of the following can be projected onto a viewing screen?

Rainbows exist because light is:

The diameter of the Sun makes an angle of 0.53 degrees from Earth, how many minutes does it take the Sun to move 1 solar diameter in an overhead sky?

No glass is perfectly transparent. Mainly because of reflections, about 91% of light passes through an average sheet of clear windowpane. The 9% loss is not noticed through a single sheet, but through several sheets, the loss is apparent. How much light is transmitted by a double-paned window, one with 2 sheets of glass?

When light strikes glass perpendicularly, about 3.6% is reflected at each surface. Find what percent of light is transmitted through a pane of window glass.

A butterfly at eye level is 22 cm in front of a plane mirror. You are behind the butterfly, 60 cm from the mirror. What is the distance between your eye and the image of the butterfly in the mirror?

Suppose you walk toward a mirror at 1.4 m/s, how fast do you and your image approach each other?

An image of the American flag cast by a simple lens finds red and blue colors at slightly different distances from the lens. The color closest to the lens is:

Chromatic aberration is a consequence of different colors in a lens having different: