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Pls solve 

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Asked by g_archanasharma 27th March 2018, 8:58 PM
Answered by Expert
Answer:
Option (3) is correct.
 
 
We space know space that comma

Speed space of space sound space comma

straight V equals space square root of γRT over straight M end root

straight V subscript straight H over straight V subscript He space equals space space space space fraction numerator square root of begin display style straight gamma subscript straight H over straight M subscript straight H end style end root over denominator square root of begin display style straight gamma subscript He over straight M subscript He end style end root end fraction

space space space space space space space space equals space fraction numerator square root of begin display style fraction numerator begin display style bevelled 7 over 5 end style over denominator 2 end fraction end style end root over denominator square root of begin display style fraction numerator begin display style bevelled 5 over 3 end style over denominator 4 end fraction end style end root end fraction

space space space space space space space space space equals space square root of 42 over 25 end root

space space straight V subscript straight H over straight V subscript He equals fraction numerator square root of 42 over denominator 5 end fraction
Answered by Expert 28th March 2018, 9:47 AM
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