First slide

Radiation

Question

A black body radiates 20 W temperature 227°C. If temperature of the black body is changed to 727°C then its radiating power will be:

Moderate

A

120 W
B

240 W
C

320 W
D

360 W

Solution

$\frac{P_{2}}{P_{1}} = \frac{{T^{4}}_{2}}{{T^{4}}_{1}} \frac{P_{2}}{20} = 16 P_{2} = 320 W$

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