Question

a tungsten - filament lightbulb emits light based on the temperature of the filament. which phenomenon does this demonstrate?
a. quantum mechanics
b. blackbody radiation
c. photoelectric effect
d. emission spectra

Explanation:

A tungsten - filament lightbulb emits light in a way similar to how a blackbody radiates. A blackbody is an idealized object that emits radiation based on its temperature. Tungsten - filament acts in a way that its light - emission characteristics are related to its temperature, which is a characteristic of blackbody radiation. Quantum mechanics is a broader theory, the photoelectric effect involves electrons being ejected from a material due to light, and emission spectra are related to the discrete wavelengths of light emitted by atoms or molecules in specific energy transitions.

Answer:

B. Blackbody radiation