1
TG EAPCET 2024 (Online) 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
The ratio of the centripetal accelerations of the electron in two successive orbits of hydrogen is $81: 16$. Due to ${ }^3$ transition between these two states, the angular momentum of the electron changes by ( $h=$ Planck's constant)
A
$\frac{h}{3 \pi}$
B
$\frac{3 h}{\pi}$
C
$\frac{h}{2 \pi}$
D
$\frac{2 h}{\pi}$
2
TG EAPCET 2024 (Online) 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
The operation of a nuclear reactor is said to be critical when the value of neutron multiplication factor $K i s$
A
$K=0$
B
$K=1$
C
$K>1$
D
$0
3
TG EAPCET 2024 (Online) 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
An $\alpha$-particle of energy $E$ is liberated during the decay of a nucleus of mass number 236. The total energy released in this process is
A
58 E
B
$59 E$
C
$\frac{58 E}{59}$
D
$\frac{59 E}{58}$
4
TG EAPCET 2024 (Online) 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
The voltage gain of a transistor in common emitter configuration is 160 . The resistances in base and collector sides of the circuit are $1 \mathrm{k} \Omega$ and $4 \mathrm{k} \Omega$ respectively. If the change in base current is $100 \mu \mathrm{~A}$, then the change in output current is
A
4 mA
B
$4 \mu \mathrm{~A}$
C
40 mA
D
$40 \mu \mathrm{~A}$
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