Black Body Radiation

The graph shows how the intensity of different wavelengths of radiation from a hot object varies with temperature. What can NOT be concluded from the graph about how the distribution of the intensity of radiation from an object changes as the temperature of the object increases?

• the intensity of every wavelength increases

• the shorter the wavelength the more rapid the increase in intensity

• the peak intensity occurs at shorter wavelength

• the intensity of every wavelength decreases

Tags

NGSS.HS-PS4-1

Based on the Wien's law, when the temperature increases, the phenomena that will be happen is...

• A. There is no change in the wavelength

• B. The wave length will be increase

• C. The wavelength will be decrease

• D.The frequency will be increase

• E. The frequency will be decrease

Tags

NGSS.HS-PS4-1

Two stars A and B emits the same amount of light. The wavelength that star A emits is longer than the wavelength that star B emits. What can you conclude from that explanation?

• The frequency of star A is higher than star B

• The frequency of star B is higher than star A

• The temperature of star A and star B is same

• The temperature of star A is higher than star B

• The temperature of star A is lower than star B

Tags

NGSS.HS-PS4-1

A black body is defined as a perfect absorber of radiations. It may or may not be a perfect emitter of radiations

• true

• false

what kind of heat is happening when the sun heats your body

• conduction

• convection

• density

• radiation

Tags

NGSS.HS-PS4-3

What is a black body in the context of black body radiation?

• A perfect absorber and emitter of radiation

• A perfect absorber but not a perfect emitter of radiation

• A perfect emitter but not a perfect absorber of radiation

• Neither a perfect absorber nor a perfect emitter of radiation

Tags

NGSS.HS-PS4-3

According to Planck's law, what happens to the intensity of radiation as the frequency increases?

• It increases

• It decreases

• It remains constant

• It first increases and then decreases

Tags

NGSS.HS-PS4-1

Which law explains the shift in the peak wavelength of black body radiation with temperature?

• Stefan-Boltzmann Law

• Planck's Law

• Wien's Displacement Law

• Kirchhoff's Law

Tags

NGSS.HS-PS4-3

What is the relationship between the temperature of a black body and the total energy emitted per unit area?

• Directly proportional to the fourth power of temperature

• Directly proportional to the square of temperature

• Inversely proportional to the temperature

• Independent of temperature

Which experiment is associated with the study of black body radiation?

• Michelson-Morley Experiment

• Young's Double-Slit Experiment

• Cavendish Experiment

• Cavity Radiation Experiment

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

NGSS.HS-PS4-4