1
JEE Advanced 2023 Paper 1 Online
MCQ (Single Correct Answer)
+3
-1
Change Language
Match the temperature of a black body given in List-I with an appropriate statement in List-II, and choose the correct option.

[Given: Wien's constant as $2.9 \times 10^{-3} \mathrm{~m}-\mathrm{K}$ and $\frac{h c}{e}=1.24 \times 10^{-6} \mathrm{~V}-\mathrm{m}$ ]

List - I List - II
(P) $2000 \mathrm{~K}$ (1) The radiation at peak wavelength can lead to emission of photoelectrons from a metal of work function $4 \mathrm{eV}$.
(Q) $3000 \mathrm{~K}$ (2) The radiation at peak wavelength is visible to human eye.
(R) $5000 \mathrm{~K}$ (3) The radiation at peak emission wavelength will result in the widest central maximum of a single slit diffraction.
(S) $10000 \mathrm{~K}$ (4) The power emitted per unit area is $1 / 16$ of that emitted by a blackbody at temperature $6000 \mathrm{~K}$.
(5) The radiation at peak emission wavelength can be used to image human bones.
A
$P \rightarrow 3, Q \rightarrow 5, R \rightarrow 2, S \rightarrow 3$
B
$P \rightarrow 3, Q \rightarrow 2, R \rightarrow 4, S \rightarrow 1$
C
$P \rightarrow 3, Q \rightarrow 4, R \rightarrow 2, S \rightarrow 1$
D
$P \rightarrow 1, Q \rightarrow 2, R \rightarrow 5, S \rightarrow 3$
2
JEE Advanced 2023 Paper 1 Online
MCQ (Single Correct Answer)
+3
-1
Change Language
A series LCR circuit is connected to a $45 \sin (\omega t)$ Volt source. The resonant angular frequency of the circuit is $10^5 ~\mathrm{rad}~ \mathrm{s}^{-1}$ and current amplitude at resonance is $I_0$. When the angular frequency of the source is $\omega=8 \times 10^4 ~\mathrm{rad} ~\mathrm{s}^{-1}$, the current amplitude in the circuit is $0.05 I_0$. If $L=50 ~\mathrm{mH}$, match each entry in List-I with an appropriate value from List-II and choose the correct option.

List - I List - II
(P) $I_0$ in $\mathrm{mA}$ (1) 44.4
(Q) The quality factor of the circuit (2) 18
(R) The bandwidth of the circuit in $\mathrm{rad}~ \mathrm{s}^{-1}$ (3) 400
(S) The peak power dissipated at resonance in Watt (4) 2250
(5) 500
A
$P \rightarrow 2, Q \rightarrow 3, R \rightarrow 5, S \rightarrow 1$
B
$P \rightarrow 3, Q \rightarrow 1, R \rightarrow 4, S \rightarrow 2$
C
$P \rightarrow 4, Q \rightarrow 5, R \rightarrow 3, S \rightarrow 1$
D
$P \rightarrow 4, Q \rightarrow 2, R \rightarrow 1, S \rightarrow 5$
3
JEE Advanced 2023 Paper 1 Online
MCQ (Single Correct Answer)
+3
-1
Change Language
A thin conducting rod $M N$ of mass $20 ~\mathrm{gm}$, length $25 \mathrm{~cm}$ and resistance $10 ~\Omega$ is held on frictionless, long, perfectly conducting vertical rails as shown in the figure. There is a uniform magnetic field $B_0=4 \mathrm{~T}$ directed perpendicular to the plane of the rod-rail arrangement. The rod is released from rest at time $t=0$ and it moves down along the rails. Assume air drag is negligible. Match each quantity in List-I with an appropriate value from List-II, and choose the correct option.

[Given: The acceleration due to gravity $g=10 \mathrm{~m} \mathrm{~s}^{-2}$ and $e^{-1}=0.4$ ]

JEE Advanced 2023 Paper 1 Online Physics - Electromagnetic Induction Question 2 English
List - I List - II
(P) At $t=0.2 \mathrm{~s}$, the magnitude of the induced emf in Volt (1) 0.07
(Q) At $t=0.2 \mathrm{~s}$, the magnitude of the magnetic force in Newton (2) 0.14
(R) At $t=0.2 \mathrm{~s}$, the power dissipated as heat in Watt (3) 1.20
(S) The magnitude of terminal velocity of the rod in $\mathrm{m} \mathrm{s}^{-1}$ (4) 0.12
(5) 2.00
A
$P \rightarrow 5, Q \rightarrow 2, R \rightarrow 3, S \rightarrow 1$
B
$P \rightarrow 3, Q \rightarrow 1, R \rightarrow 4, S \rightarrow 5$
C
$P \rightarrow 4, Q \rightarrow 3, R \rightarrow 1, S \rightarrow 2$
D
$P \rightarrow 3, Q \rightarrow 4, R \rightarrow 2, S \rightarrow 5$
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