Which of the following is true for Balmer series of the hydrogen sp...

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Which of the following is true for Balmer series of the hydrogen spectrum?
(a) The entire series falls in the UV region
(b) The series is partly in the visible region and partly in the UV region
(c) The wave number of the first Balmer line is \( \frac{5 R}{36}, R \) is the Rydberg's constant
(d) The colour of the second line of Balmer series is blue.
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