JEE Main 2022 · 26 Jul · Shift 1 · Physics Q59

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PhysicsInteger+4 / -1Question 59 of 90

In the hydrogen spectrum, $\lambda$ be the wavelength of first transition line of Lyman series. The wavelength difference will be " $a\lambda$ " between the wavelength of 3 $^{\text{rd}}$ transition line of Paschen series and that of 2 $^{\text{nd}}$ transition line of Balmer series where $a=$ ______.

Your answer

Answer and worked solution

Official answer: 5

Wavelengths in units of the Lyman first line $\lambda=\frac4{3R}$ : Paschen third line ( $6\to3$ ) is $9\lambda$ , Balmer second line ( $4\to2$ ) is $4\lambda$ .

Difference $5\lambda$ .

Answer: 5

Topics:Bohr model and hydrogen spectrum

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JEE Main 2022 · 26 Jul · Shift 1, Physics question 59