Easy
What is radiation and radiant energy?
(N/A) Radiation is the process of heat transfer in which energy is emitted by a body in the form of electromagnetic waves,which can travel through a vacuum without the need for any material medium.
Radiant energy is the energy carried by these electromagnetic waves. When this energy falls on a body,it is partially absorbed,reflected,or transmitted. The part that is absorbed increases the internal energy of the body,thereby raising its temperature.
Radiant energy is the energy carried by these electromagnetic waves. When this energy falls on a body,it is partially absorbed,reflected,or transmitted. The part that is absorbed increases the internal energy of the body,thereby raising its temperature.
Explore More
Similar Questions
For a perfectly black body,the coefficient of emission (emissivity) is:
Inside a closed furnace held at a temperature of $400\, K,$ we have a black body. $A$ hole of area $10\, cm^2$ is opened in the furnace so that sunlight starts falling on the black body. The intensity of sunlight is $2000\, W/m^2.$ In the steady state:
Medium
View SolutionWhich of the following is the correct device for the detection of thermal radiation?
Easy
View SolutionHeat energy is incident on the surface of a material at the rate of $1000 \ J \ min^{-1}$. If the coefficient of absorption is $0.8$ and the coefficient of reflection is $0.1$,then the amount of heat energy transmitted through the material in $5$ minutes is: (in $J$)
The graph shows the blackbody radiation curves at temperatures $T_1$ and $T_2$. Which of the following is correct? $(T_2 > T_1)$
Medium
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo