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CBSE Class 12-science Answered

pls explain
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Asked by mufeedatvp2000 | 19 Apr, 2020, 16:20: PM
answered-by-expert Expert Answer
Average intensity of electromagnetic waves is given as, 
I space space equals space 1 half space element of subscript 0 space c space E squared subscript 0 space P over A equals space 1 half space element of subscript 0 space c space E squared subscript 0 space E subscript 0 superscript 2 space equals space fraction numerator 2 P over denominator A element of subscript 0 space c end fraction space E subscript 0 superscript 2 space space space equals space open square brackets fraction numerator 2 cross times 1500 over denominator 4 pi open parentheses 3 close parentheses squared space cross times 8.85 cross times 10 to the power of negative 12 end exponent cross times 3 cross times 10 to the power of 8 end fraction close square brackets space space equals space 10000 space therefore E subscript 0 equals space 100 space V divided by m space 
 
Correct option - (B) 
Answered by Shiwani Sawant | 19 Apr, 2020, 17:18: PM

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CBSE 12-science - Physics
please resolve with good explanation
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Asked by kulhariabhijeet | 21 Apr, 2024, 14:39: PM
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CBSE 12-science - Physics
which of the following does not travel in vaccum
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Asked by writetoakashyadav | 28 Feb, 2024, 19:41: PM
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CBSE 12-science - Physics
what is displacement current? why this concept was introduced?
Asked by munaxa013 | 19 Jan, 2024, 13:21: PM
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CBSE 12-science - Physics
Please answer this.  What is meant by the term 'displacement current'? Briefly explain how this current is different from a conduction current.
Asked by sagarmishra | 06 Mar, 2023, 16:07: PM
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CBSE 12-science - Physics
Why is the intensity of light is directly proportional to the square of amiplitude  
Asked by vashu7985864937 | 23 Dec, 2021, 00:28: AM
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CBSE 12-science - Physics
pls explain
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Asked by mufeedatvp2000 | 19 Apr, 2020, 16:20: PM
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CBSE 12-science - Physics
Why light can travel in vacuum where as sound can not do so
Asked by dumpapurush | 22 Oct, 2018, 10:48: AM
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CBSE 12-science - Physics
What is polarisation
Asked by ashwin.mts | 01 Oct, 2018, 17:27: PM
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CBSE 12-science - Physics
how are frequency and intencity of electromagnetic wave related?
Asked by mbinukurian1971 | 25 Jul, 2018, 00:29: AM
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CBSE 12-science - Physics
What is an electromagnetic wave?
Asked by Topperlearning User | 04 Jun, 2014, 13:23: PM
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