1
AP EAPCET 2022 - 4th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

If $$\Delta x$$ is the uncertainty in position and $$\Delta v$$ is the uncertainty in velocity of a particle are equal, the correct expression for uncertainty in momentum for the same particle is

A
$$\frac{1}{4} \sqrt{\frac{m h}{\pi}}$$
B
$$\frac{1}{3} \sqrt{\frac{m h}{2 \pi}}$$
C
$$\frac{1}{2} \sqrt{\frac{m h}{\pi}}$$
D
$$\frac{1}{2} \sqrt{\frac{h}{m \pi}}$$
2
AP EAPCET 2022 - 4th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

The number of radial nodes and angular nodes of a $$4 f$$-orbital are respectively

A
0, 3
B
1, 2
C
2, 1
D
2, 0
3
AP EAPCET 2021 - 20th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

A subshell $$n=3, l=2$$ can accommodate maximum of

A
10 electrons
B
6 electrons
C
18 electrons
D
16 electrons
4
AP EAPCET 2021 - 20th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

If the work function for the photoelectron emission of a metal is 3.75 eV, then the threshold wavelength of the radiation needed for the ejection of the electron is approximately

A
315 nm
B
280 nm
C
330 nm
D
290 nm

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