1
AP EAPCET 2024 - 21th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
$X$ and $Y$ are two circuits having coefficient of mutual inductance 3 mH and resistance $10 \Omega$ and $4 \Omega$ respectively. To have induced current $60 \times 10^{-4} \mathrm{~A}$ in circuit $Y$, the amount of current to be changed in circuit $X$ in 0.02 s is
A
1.6 A
B
0.16 A
C
0.32 A
D
3.2 A
2
AP EAPCET 2024 - 21th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
Two figures are shown as Fig. $A$ and Fig. $B$. The time constant of Fig. $A$ is $\tau_A$ and time constant of Fig. $B$ is $\tau_B$. Then AP EAPCET 2024 - 21th May Morning Shift Physics - Capacitor Question 1 English
A
$\tau_A=\frac{1}{4} \mathrm{~s}$ and $\tau_B=5 \mathrm{~s}$
B
$\tau_A=\frac{1}{2} \mathrm{~s}$ and $\tau_B=\frac{1}{5} \mathrm{~s}$
C
$\tau_A=4 \mathrm{~s}$ and $\tau_B=5 \mathrm{~s}$
D
$\tau_A=\frac{1}{3} \mathrm{~s}$ and $\tau_B=10 \mathrm{~s}$
3
AP EAPCET 2024 - 21th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
Which of the following produces electromagnetic waves?
A
Stationary charges
B
Charges in uniform motion
C
Accelerating charges
D
Stationary magnet
4
AP EAPCET 2024 - 21th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
A blue lamp emits light of mean wavelength $4500$ Å. The lamp is rated at 150 W and $8 \%$ efficiency. Then, the number of photons are emitted by the lamp per second
A
$27.17 \times 10^{18}$
B
$17.17 \times 10^{18}$
C
$27.17 \times 10^{15}$
D
$54 \times 10^{16}$
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