Question

Estimate the peak wavelength for radiation emitted from ice at -4.0 degrees Celsius, assuming black body emission.

Answer 1

`10.8* 10^(-6)` m

Step-by-step explanation:

T = temperature of ice = - 4 °C

In kelvin, temperature is given as

T = -4 + 273 = 269 K

λ = Wavelength of radiation emitted

b = Wien's constant = 2.898 x 10⁻³ m K

peak wavelength is given as

`\lambda = (b)/(T)`

inserting the values

`\lambda = (0.002898)/(269)`

`\lambda = 10.8* 10^(-6)` m