First slide

Radiation

Question

What is the approximate surface temperature of red star?

Moderate

A

4114 K
B

5226 K
C

7420 K
D

6821 K

Solution

Maximum radiation from the surface of star takes place for the wavelength of red light i.e.
$\begin{array}{l} for λ = 7000 \overset{0}{A} \\ Now λT = 0 .288 K - cm \\ \Rightarrow T = \frac{0 .288}{7000 \times 10^{- 8}} K = 4114 K \end{array}$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App