107k views
1 vote
A common radio wavelength observed coming from astronomical objects is 21 cm. what temperature is associated with this radiation? 1st attempt See Hint Feedback 13.8

User Moluzhui
by
6.8k points

1 Answer

5 votes

Answer:


T = 1.38* 10^(-2) K

Step-by-step explanation:

Given data:

wavelength = 21 cm

from wein's displacement relation we have


\lambda_(max) = (b)/(T)

Where,

b is wein's constant and it is given as
2.89 * 10^(−3) m⋅K

and T is temperature of radiation ,
\lambda_(max) represent wavelength

Putting all value in the above equation to obtained desired temperature value


T = (b)/(\lambda_(max))


T = (2.89* 10^(-3))/(0.21)


T = 1.38* 10^(-2) K

User Unpossible
by
6.9k points