Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-science Answered

A furnace emits radiation at 2000 K. Treating it as black body radiation, calculate Wave length at which emission is maximum and the corresponding radiant flux density
Asked by vikranthpoluparthi1 | 04 May, 2021, 12:30: PM
answered-by-expert Expert Answer
c1 = 0.374 x 10 -15 W/m2 
M a x i m u m space w a v e l e n g t h space left parenthesis lambda subscript m a x end subscript right parenthesis B y space W e i n apostrophe s space l a w comma space lambda subscript m a x end subscript space T space equals space 2.9 cross times 10 to the power of negative 3 end exponent space m K space lambda subscript m a x end subscript space equals space fraction numerator 2.9 cross times 10 to the power of negative 3 end exponent over denominator T end fraction space equals space fraction numerator 2.9 cross times 10 to the power of negative 3 end exponent over denominator 2000 end fraction equals space 1.45 cross times 10 to the power of negative 6 end exponent space m space lambda subscript m a x end subscript space equals space 1.45 space mu E subscript b lambda end subscript space equals space fraction numerator c subscript 1 lambda subscript m a x end subscript to the power of negative 5 end exponent over denominator e open parentheses blank to the power of begin display style fraction numerator c subscript 2 over denominator lambda subscript m a x end subscript T end fraction end style end exponent close parentheses subscript negative 1 end subscript end fraction space equals space fraction numerator 0.374 space cross times 10 to the power of negative 15 end exponent cross times open parentheses 1.45 cross times 10 to the power of negative 6 end exponent close parentheses to the power of negative 5 end exponent over denominator open parentheses begin display style fraction numerator 14.4 space cross times 10 to the power of negative 3 end exponent over denominator 1.45 cross times 10 to the power of negative 6 end exponent cross times 2000 end fraction end style close parentheses subscript negative 1 end subscript end fraction space equals space 4.09 cross times 10 to the power of 11 W divided by m squared 
 
Thus, corresponding radiant flux density = 4.09 x 1011 W/m2 
Answered by Shiwani Sawant | 04 May, 2021, 03:01: PM

Concept Videos

Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment
Answered Unanswered My Questions My Answers
CBSE 11-science - Physics
  The temperature of perfect black body changes from 3000K to 4000K.What is the percentage change in energy radiation.
Asked by ankitvariya1000 | 29 Mar, 2022, 11:19: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
The temperature of perfect black body changes from 3000K to 4000K.What is the percentage change in energy radiation.
Asked by jatinsahu37 | 27 Mar, 2022, 04:45: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
A furnace emits radiation at 2000 K. Treating it as black body radiation, calculate Wave length at which emission is maximum and the corresponding radiant flux density
Asked by vikranthpoluparthi1 | 04 May, 2021, 12:30: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
 A furnace emits radiation at 2000 K. Treating it as a black body radiation, calculate the monochromatic radiant flux density at 1 micron m wavelength
Asked by prabhakararao viriyala | 14 Jun, 2020, 12:17: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
There are two thin spheres A and B of the same material and same thickness.They emit like black bodies.Radius of A is double that of B.A and B have same tempt. T .When A and B are kept in a room of tempt T0(less than T),the ratio of their rates of cooling (rate of fall of tempt) is
Asked by m.nilu | 08 Dec, 2018, 02:03: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Two bodies A and B have emissivities 0.5 and 0.8 respec .At some tempt the two bodies have emissive powers at these tempt.
Asked by m.nilu | 08 Dec, 2018, 01:49: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Explain the working of room heater. How can we increase the efficiency of convections in radiator of a room heater?
Asked by Topperlearning User | 15 Apr, 2015, 04:28: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
By what mode of heat transfer is mercury heated?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Which of the three modes of transfer of heat is the fastest?
Asked by Topperlearning User | 15 Apr, 2015, 04:32: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
One thermometer is placed half metre above the tip of the fire and one thermometer is placed half metre at the side of the fire. Would the readings of the two thermometers be same or different and why?
Asked by Topperlearning User | 15 Apr, 2015, 04:38: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt

Be a Top Scorer in the Exam with Test Series and Test Generator!

Enrol Now
×