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Tatiana [17]
3 years ago
13

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
Geography
1 answer:
scZoUnD [109]3 years ago
3 0

Answer:

T = 1.38\times 10^{-2} K

Explanation:

Given data:

wavelength = 21 cm

from wein's displacement relation we have

\lambda_{max} = \frac{b}{T}

Where,

b is wein's constant and it is given as  2.89 \times 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 = \frac{b}{\lambda_{max}}

T = \frac{2.89\times 10^{-3}}{0.21}

T = 1.38\times 10^{-2} K

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