1
AP EAPCET 2024 - 20th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
An inductor and a resistor are connected in series to an AC source of voltage $144 \sin \left(100 \pi t+\frac{\pi}{2}\right) \mathrm{V}$. If the current in the circuit is $6 \sin \left(100 \pi t+\frac{\pi}{6}\right) \mathrm{A}$, then the resistance of the resistor is
A
$24 \Omega$
B
$36 \Omega$
C
$12 \Omega$
D
$18 \Omega$
2
AP EAPCET 2024 - 20th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
Inner shell electrons in atoms moving from one energy level to another lower energy level produce
A
gamma rays
B
microwaves
C
radio waves
D
ultraviolet rays
3
AP EAPCET 2024 - 20th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
If the kinetic energy of a particle in motion is decreased by $36 \%$, the increase in de-Broglie wavelength of the particle is
A
$18 \%$
B
$25 \%$
C
$20 \%$
D
$32 \%$
4
AP EAPCET 2024 - 20th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The speed of the electron in a hydrogen atom in the $n=3$ level is

(Planck's constant $=6.6 \times 10^{-34} \mathrm{Js}$ )

A
$62 \times 10^5 \mathrm{~ms}^{-1}$
B
$3.7 \times 10^5 \mathrm{~ms}^{-1}$
C
$7.3 \times 10^5 \mathrm{~ms}^{-1}$
D
$1.6 \times 10^5 \mathrm{~ms}^{-1}$
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