1
AP EAPCET 2024 - 23th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The sum of number of angular nodes and radial nodes for $4 d$-orbital is

A
2
B
3
C
4
D
5
2
AP EAPCET 2024 - 23th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If the position of the electron was measured with an accuracy of +0.002 nm . The uncertainty in the momentum of it would be (in $\mathrm{kg} \mathrm{ms}^{-1}$ )

$$ \left(h=6.626 \times 10^{-34} \mathrm{Js}\right) $$

A
$2.637 \times 10^{-23}$
B
$2.637 \times 10^{-24}$
C
$8.283 \times 10^{-23}$
D
$8.283 \times 10^{-24}$
3
AP EAPCET 2024 - 22th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
The de-Broglie wavelength of an electron with kinetic energy of 2.5 eV is (in m$)\left(1 \mathrm{eV}=1.6 \times 10^{-19} \mathrm{~J}\right.$, $m_e=9 \times 10^{-31} \mathrm{~kg}$ )
A
$\frac{h \times 10^{-25}}{\sqrt{72}}$
B
$\frac{h \times 10^{25}}{\sqrt{72}}$
C
$\frac{\sqrt{72}}{h \times 10^{-25}}$
D
$\frac{\sqrt{72}}{h \times 10^{25}}$
4
AP EAPCET 2024 - 22th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
The ratio of ground state energy of $\mathrm{Li}^{2+}, \mathrm{He}^{+}, \mathrm{H}$ is
A
$3: 2: 1$
B
$1: 2: 3$
C
$9: 4: 1$
D
$1: 4: 9$
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