
B.1 Review MCQ 2

Quiz
•
Physics
•
12th Grade
•
Hard
Lester Orellana
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a black body?
An object that reflects all energy
A theoretical object that absorbs all energy from all wavelengths of light
A real object that emits only visible light
An object that only absorbs ultraviolet light
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a black body in thermal equilibrium emit?
Only visible light
Only infrared radiation
Black body radiation containing all wavelengths of light
Only ultraviolet light
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which objects are very close approximations to black bodies?
Planets
Stars
Moons
Comets
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does Wien’s Law state about the absolute temperature of a star?
It is directly proportional to the wavelength of maximum radiation
It is inversely proportional to the wavelength of maximum radiation
It is unrelated to the wavelength of maximum radiation
It is equal to the wavelength of maximum radiation
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the luminosity of a black body measured?
In joules
In watts
In lumens
In candelas
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the luminosity of a black body directly proportional to?
The volume of the star
The surface area of the star
The mass of the star
The density of the star
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To what power is the absolute temperature of a star raised in relation to its luminosity?
Second power
Third power
Fourth power
Fifth power
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