# lOTS OF PHYSICS :)

posted by .

41.

Is the speed of light constant as it passes through transparent materials?

Yes, the speed of is always constant

No, light travels at different speeds through different materials

42.

A lens that causes light to diverge is

A converging lens

A diverging lens

Fish-eye lens

43.

An image formed by a magnifying glass is larger than life. The reflected rays of light from the object appear to converge at a location outside of the object. The image formed is a

Real image

Fake image

Virtual image

Mirage

44.

An image formed by rays of light that converge at the location of the object is a

Real image

Fake image

Virtual image

Mirage

Part 10-1

(Each question is worth one point)

45.

Huygen's principle suggests that

Wave fronts are composed of only single waves

Wave fronts are composed of many smaller wave fronts

Wave fronts are always the same size

46.

Which wavelength is easiest to diffract?

Long wavelengths (low frequencies)

Short wavelengths (high frequencies)

All wavelengths diffracts just the same

47.

When the crest of one wave aligns with the trough of another wave the result is

Constructive interference

Destructive interference

48.

Two Polaroid filters with their axes at right angles

Transmit all light

Transmit 50% of all incident light

Transmit no light

49.

Holograms are created

Using laser light

Using two sets of wave fronts

By using interference patterns

All of the above

Part 11-1

(Each question is worth one point)

50.

An excited atom temporarily has an electron farther from its nucleus. This electron is at

A higher energy level

Lower energy level

Peace with the universe

51.

The frequency of a photon is directly proportional to

Its speed

Its energy

Its wavelength

52.

An emission spectrum can be used to

Create energy

Identify elements

Store energy

Transform elements

53.

The dominant frequency in incandescent light is called

The sharp frequency

The strong frequency

The peak frequency

54.

Dark lines in an absorption spectrum are called

Spectral lines

Silent bands

Absorption lines

Part 12-1

(Each question is worth one point)

55.

Radiating energy travels in discrete packages called

Compliments

Photoelectrons

Quanta

Particles

56.

A quanta of light is

A photoelectron

A wave

A photon

A particle

57.

Why does the world appear smooth and continuous rather than grainy as described by quantum physics

The world appears smooth and continuous because we are not sensitive to the small scale microworld of the quanta

The world actually is smooth and continuous

Quantum physics is incorrect

Both b and c

58.

The individual energies of photons vary with

The frequencies of electromagnetic waves present

The number of photons present

59.

The photoelectric effect can be explained

Only in the "light as particles" view of light

Only in the "light as waves" view of light

Neither a or b

60.

The property of interference can be explained

Only in the "light as particles" view of light

Only in the "light as waves" view of light

Neither a or b

• lOTS OF PHYSICS :) -

I will be happy to check your thinking.

• lOTS OF PHYSICS :) -

Thanks