What is a black body in physics?
a) A body that absorbs all light and reflects none
b) A body that emits only red light
c) A body that emits no light
d) A body that absorbs all electromagnetic radiation
What does the spectrum of a black body depend on?
a) Its chemical composition
b) Its surface texture
c) Its temperature
d) The color of the light source
Who proposed the theory of black body radiation?
a) Isaac Newton
b) Albert Einstein
c) Max Planck
d) Niels Bohr
The Planck’s law of black body radiation gives the:
a) Wavelength at which the maximum radiation occurs
b) Energy emitted per unit area of the body
c) Total power radiated by the body
d) Frequency of the emitted radiation
In black body radiation, the intensity of emitted radiation increases with:
a) Decreasing temperature
b) Increasing frequency
c) Increasing temperature
d) Decreasing wavelength
What is Wien’s Displacement Law related to?
a) Energy radiated by a black body
b) The frequency of emitted radiation
c) The maximum wavelength of emitted radiation
d) The temperature of a black body
The Stefan-Boltzmann law describes the relationship between a black body’s temperature and:
a) Its color
b) The total energy radiated
c) The frequency of emitted radiation
d) The type of material
What happens to the peak wavelength of radiation from a black body as its temperature increases?
a) It stays the same
b) It decreases
c) It increases
d) It fluctuates randomly
What is the relationship between the total energy radiated and the temperature of a black body, according to the Stefan-Boltzmann law?
a) Energy is inversely proportional to temperature
b) Energy is proportional to the square of temperature
c) Energy is proportional to the fourth power of temperature
d) Energy is independent of temperature
In black body radiation, as the temperature of the body increases, the emitted radiation shifts towards which part of the electromagnetic spectrum?
a) Infrared
b) Ultraviolet
c) Visible
d) Radio waves
The term “black body” is used because the object:
a) Reflects all light
b) Absorbs all light
c) Emits no radiation
d) Absorbs no radiation
The black body radiation curve becomes flatter as:
a) The temperature decreases
b) The wavelength increases
c) The temperature increases
d) The frequency decreases
What does Planck’s constant describe in the context of black body radiation?
a) The amount of radiation absorbed
b) The frequency of emitted radiation
c) The energy per photon of radiation
d) The temperature of the body
Which of the following statements is true about black body radiation?
a) A black body only emits radiation at a fixed frequency
b) A black body absorbs radiation but does not emit it
c) A black body emits radiation across a wide spectrum
d) A black body emits radiation based solely on its color
At what wavelength does a black body emit the most radiation?
a) It depends on the size of the object
b) It depends on the material of the object
c) It is determined by the object’s temperature
d) It is determined by the object’s frequency
Wien’s Displacement Law states that the wavelength at which radiation from a black body is most intense is:
a) Directly proportional to the temperature
b) Inversely proportional to the temperature
c) Independent of the temperature
d) Directly proportional to the intensity
The amount of radiation emitted by a black body is related to:
a) Its temperature and its surface area
b) Its mass and temperature
c) Its volume and wavelength
d) Its color and texture
Which of the following laws is used to calculate the total energy radiated by a black body?
a) Ohm’s Law
b) Stefan-Boltzmann Law
c) Snell’s Law
d) Coulomb’s Law
In the context of black body radiation, what does the Stefan-Boltzmann constant describe?
a) The energy per photon
b) The total energy radiated per unit area
c) The maximum wavelength of radiation
d) The frequency at which radiation is emitted
Which scientist’s work on black body radiation led to the development of quantum theory?
a) Niels Bohr
b) Max Planck
c) Albert Einstein
d) Werner Heisenberg
The radiation emitted by a black body is:
a) Dependent on the wavelength but not the temperature
b) Independent of temperature
c) Dependent on both the wavelength and temperature
d) Only emitted in the visible spectrum
What type of electromagnetic radiation is emitted most by a black body at high temperatures?
a) Gamma rays
b) X-rays
c) Infrared radiation
d) Visible light
In a black body radiation curve, as the temperature increases, what happens to the peak wavelength?
a) The peak wavelength increases
b) The peak wavelength stays the same
c) The peak wavelength decreases
d) The peak wavelength fluctuates
According to the Stefan-Boltzmann law, if the temperature of a black body is doubled, the total energy radiated by the body increases by a factor of:
a) 2
b) 4
c) 8
d) 16
What does the intensity of radiation from a black body depend on, according to the Stefan-Boltzmann law?
a) Wavelength and frequency
b) Temperature and surface area
c) Color and texture
d) Type of material and temperature
Which of the following is true for the radiation from a black body?
a) The radiation spectrum depends on the color of the object
b) A perfect black body absorbs and emits radiation at all wavelengths
c) A black body radiates only ultraviolet light
d) A black body radiates only visible light
According to Wien’s Law, a higher temperature of a black body results in:
a) Longer wavelength radiation
b) A shift in the emitted radiation to shorter wavelengths
c) Radiation that is emitted only in the infrared spectrum
d) A reduction in the total amount of radiation
In a black body spectrum, the intensity of radiation increases as the temperature:
a) Decreases
b) Remains constant
c) Increases
d) Fluctuates periodically
What is the relationship between the intensity of black body radiation and the temperature of the body?
a) Intensity is directly proportional to temperature
b) Intensity is inversely proportional to temperature
c) Intensity is proportional to the square of temperature
d) Intensity is proportional to the fourth power of temperature
Which physical phenomenon does black body radiation play a critical role in understanding?
a) The photoelectric effect
b) The emission spectrum of stars
c) The Doppler effect
d) The bending of light around black holes
