Assertion Bamer series lies in the visble region of electromagnetic spectrum.
Reason `(1)/(lambda)=R((1)/(2^(2))-(1)/n^(2))` , where n = 3, 4, 5,.....

Options

A. If both Assertion and Reason are true and Reason is the correct explanation of Assetion.
B. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
C. If Assetion is true but Reason is false.
D. If both Assertion and Reason are false.

Answer

A

Explanation

The wavelength in Balmer series is given by
`(1)/(lambda)=R((1)/(2^(2))-(1)/(n^(2))),n=3,4,5`
`(1)/(lambda_("max"))=R((1)/(2^(2))-(1)/(3^(2)))`
`rArrlambda_("max")=(36)/(5R)=(36)/(3xx1.097xx10^(7))=6563Å`
`and (1)/(lambda_("min"))=R((1)/(2^(2))-(1)/(oo^(2)))`
`rArrlambda_("max")=(4)/(R)=(4)/(1.097xx10^(7))=3464Å`
The wavelength `6563Å` and `3646Å` lie in visible region, Therefore , Bolmer series lies in visible region.