A lightbulb radiates most strongly at a wavelength of about 2940 nanometers. How hot is its...

Question

Question

A lightbulb radiates most strongly at a wavelength of about 2940 nanometers. How hot is its filament?

Answer 1

Answer #1

According to Wein’s law,

2940 nanometers = 3*10^6nm-K/T

Thus, T = 3*10^6nm-K* 2940 nm = 3000/2940 K = 1020.4 K--> The temperature of the filament

Answer 2

Similar Homework Help Questions

An electric stove burner on "high" radiates most strongly at about 2,050 nanometers. What is its...

An electric stove burner on "high" radiates most strongly at about 2,050 nanometers. What is its temperature? Please round answer to two significant figures. T = ______ K
How hot is a metal being welded if it radiates most strongly at 610 nm?

How hot is a metal being welded if it radiates most strongly at 610 nm?
A 100-W lightbulb has a resistance of about 12 Ω when cold (20 ∘C) and 136 Ω when on (hot). Estimate the temperature of the filament when hot assuming an average temperature coefficient of resistivity α=0.0045(C)−1.

Please, no referring. A 100-W lightbulb has a resistance of about 12 Ω when cold (20 ∘C) and 136 Ω when on (hot). Estimate the temperature of the filament when hot assuming an average temperature coefficient of resistivity α=0.0045(C)−1.

A 100-W lightbulb has a resistance of about 12 Ω when cold (20 ∘C) and 152...

A 100-W lightbulb has a resistance of about 12 Ω when cold (20 ∘C) and 152 Ω when on (hot). Estimate the temperature of the filament when hot assuming an average temperature coefficient of resistivity α=0.0045(C)−1.
A 100-W lightbulb has a resistance of about 12 Ω when cold (20 ∘C) and 124...

A 100-W lightbulb has a resistance of about 12 Ω when cold (20 ∘C) and 124 Ω when on (hot). Estimate the temperature of the filament when hot assuming an average temperature coefficient of resistivity α=0.0045(C)−1.
A 100-W lightbulb has a resistance of about 12 Ω when cold (20 ∘C) and 128...

A 100-W lightbulb has a resistance of about 12 Ω when cold (20 ∘C) and 128 Ω when on (hot). Estimate the temperature of the filament when hot assuming an average temperature coefficient of resistivity α=0.0045(C)−1.

A 100-W lightbulb has a resistance of about 12 Ω when cold (20 ∘C) and 128...

A 100-W lightbulb has a resistance of about 12 Ω when cold (20 ∘C) and 128 Ω when on (hot). Estimate the temperature of the filament when hot assuming an average temperature coefficient of resistivity α=0.0045(C)−1.
An incandescent lightbulb contains a tungsten filament that reaches a temperature of about 3020 K

An incandescent lightbulb contains a tungsten filament that reaches a temperature of about 3020 K, roughly half the surface temperature of the Sun. Part A Treating the filament as a blackbody, determine the frequency for which its radiation is a maximum.
Calculate the wavelength, in nanometers, of the light emitted by a hydrogen atom when its electron...

Calculate the wavelength, in nanometers, of the light emitted by a hydrogen atom when its electron falls from the n = 7 to the n = 4 principal energy level.

Consider a photon with energy 0.95 eV. Part A) What is its wavelength in nanometers? Part...

Consider a photon with energy 0.95 eV. Part A) What is its wavelength in nanometers? Part B) What is its frequency in hertz? Part C) What type of electromagnetic radiation is it?