1
TS EAMCET 2023 (Online) 12th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
The de-Broglie wavelength of an electron accelerated between two plates having a potential difference of 900 V is nearly
A
0.015 nm
B
0.01 nm
C
0.02 nm
D
0.04 nm
2
TS EAMCET 2023 (Online) 12th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
If an electron is moving in the 4th orbit of the hydrogen atom, then the angular momentum of the electron in SI unit is
A
$\frac{h}{\pi}$
B
$\frac{2 h}{\pi}$
C
$\frac{4 h}{\pi}$
D
$\frac{h}{2 \pi}$
3
TS EAMCET 2023 (Online) 12th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
The energy equivalent to a mass of 1 kg is
A
$9 \times 10^{13} \mathrm{~J}$
B
$9 \times 10^9 \mathrm{~J}$
C
$9 \times 10^{16} \mathrm{~J}$
D
$9 \times 10^6 \mathrm{~J}$
4
TS EAMCET 2023 (Online) 12th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
If $S$ is the surface area of a nucleus of mass number $A$, then
A
$S \propto A$
B
$S \propto A^{1 / 3}$
C
$S \propto A^2$
D
$S \propto A^{2 / 3}$
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