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1
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which from following equations is used to express the angular momentum of an electron in a stationary state?

A
$$m v r=\frac{n h}{2 \pi}$$
B
$$\mathrm{mvr}=\frac{2 \pi}{\mathrm{nh}}$$
C
$$r=\frac{m v h}{n 2 \pi}$$
D
$$\mathrm{mv}=\frac{2 \pi \mathrm{r}}{\mathrm{nh}}$$
2
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which emission transition series is obtained when electron jumps from $$\mathrm{n}_2=\infty$$ to $$\mathrm{n}_1=1$$ ?

A
Balmer
B
Lyman
C
Paschen
D
Bracket
3
MHT CET 2023 10th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the radius of fourth orbit of $$\mathrm{Be}^{+++}$$ ?

A
$$211.6 \mathrm{~pm}$$
B
$$158.7 \mathrm{~pm}$$
C
$$52.9 \mathrm{~pm}$$
D
$$13.2 \mathrm{~pm}$$
4
MHT CET 2023 10th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is angular momentum of an electron in fourth orbit of hydrogen atom?

A
$$\frac{\mathrm{h}}{2 \pi}$$
B
$$\frac{\mathrm{h}}{\pi}$$
C
$$\frac{2 \mathrm{~h}}{\pi}$$
D
$$\frac{3 \mathrm{~h}}{\pi}$$
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