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1
MHT CET 2019 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The angle made by orbital angular momentum of electron with the direction of the orbital magnetic moment is

A
$120^{\circ}$
B
$60^{\circ}$
C
$180^{\circ}$
D
$90^{\circ}$
2
MHT CET 2019 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The wavelength of the first line in Balmer series in the hydrogen spectrum is ' $\lambda$ '. What is the wavelength of the second line in the same series?

A
$\frac{20}{27} \lambda$
B
$\frac{3}{16} \lambda$
C
$\frac{5}{36} \lambda$
D
$\frac{3}{4} \lambda$
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