Question 1

If light in a spectroscope passed through round holes instead of slits,spectral lines would appear

Accepted Answer

A) as thicker lines. 
B) round. 
C) dimmer. 
A) as thicker lines. 
B) round. 
C) dimmer.

Question 2

Light from a lit match comes from

Accepted Answer

A) electrons. 
B) protons. 
C) neutrons. 
D) all of these 
A) electrons. 
B) protons. 
C) neutrons. 
D) all of these

Question 3

The dark lines in the sun's spectrum represent light that is

Accepted Answer

A) absorbed by the sun's atmosphere. 
B) emitted by the sun. 
C) not emitted by the sun. 
A) absorbed by the sun's atmosphere. 
B) emitted by the sun. 
C) not emitted by the sun.

Question 4

Light from a phosphorescent source

Accepted Answer

A) takes longer to travel from the source to you. 
B) normally has a shorter wavelength than the light that initially produced it. 
C) is cooler than light from a fluorescent source. 
D) all of these 
E) none of these 
A) takes longer to travel from the source to you. 
B) normally has a shorter wavelength than the light that initially produced it. 
C) is cooler than light from a fluorescent source. 
D) all of these 
E) none of these

Question 5

Green light emitted by excited mercury vapor corresponds to a particular energy transition in the mercury atom.A more energetic transition might emit

Accepted Answer

A) red light. 
B) blue light. 
C) either red or blue light. 
D) white light. 
A) red light. 
B) blue light. 
C) either red or blue light. 
D) white light.

Exam 30: Light Emission

If light in a spectroscope passed through round holes instead of slits,spectral lines would appear

Light from a lit match comes from

The dark lines in the sun's spectrum represent light that is

Light from a phosphorescent source

Green light emitted by excited mercury vapor corresponds to a particular energy transition in the mercury atom.A more energetic transition might emit

About Science

Newtons First Law of Motion: Inertia

Linear Motion

Newtons Second Law of Motion: Force and Acceleration

Newtons Third Law of Motion: Action and Reaction

Momentum

Energy

Rotational Motion

Gravity

Projectile and Satellite Motion

Atomic Nature of Matter

Solids

Liquids

Gases and Plasmas

Temperature,heat,and Expansion

Heat Transfer

Change of Phase

Thermodynamics

Vibrations and Waves

Sound

Musical Sounds

Electrostatics

Electric Current

Magnetism

Electromagnetic Induction

Properties of Light

Color

Reflection and Refraction

Light Waves

Light Quanta

The Atom and the Quantum

Atomic Nucleus and Radioactivity

Nuclear Fission and Fusion

Special Theory of Relativity

General Theory of Relativity

Filters