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NEET Class neet Answered

900 nm wavelength radiation is used in the treatment to relieve muscle pain. So which of the following is similar to this wavelength radiation? (A) Balmer (infinity to 2) (B) Lyman (infinty to 1) (C) paschen (5 to 3) (D) paschen (infinity to 3)
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Asked by dodiakanaksinh3 | 13 Sep, 2021, 10:16: PM
answered-by-expert Expert Answer
Wavelength can be calculated by-1 over lambda equals R Z squared left parenthesis 1 over n subscript 1 squared minus 1 over n subscript 2 squared right parenthesis

I f space n subscript 1 equals 3 space a n d space n subscript 2 equals infinity

t h a n space 1 over lambda equals 10 to the power of negative 7 end exponent cross times 1 squared cross times open parentheses 1 squared over 3 squared minus 1 squared over infinity squared close parentheses equals 10 to the power of negative 7 end exponent over 9 m to the power of negative 1 end exponent

lambda equals 900 n m
Correct answer is not mentioned in options, you can check by putting values of n1 and n2 in equation.
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