1
JEE Main 2023 (Online) 15th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
In the given circuit, the current (I) through the battery will be

JEE Main 2023 (Online) 15th April Morning Shift Physics - Semiconductor Question 24 English
A
1A
B
$2.5 \mathrm{~A}$
C
$2 \mathrm{~A}$
D
$1.5 \mathrm{~A}$
2
JEE Main 2023 (Online) 15th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
The de Broglie wavelength of an electron having kinetic energy $\mathrm{E}$ is $\lambda$. If the kinetic energy of electron becomes $\frac{E}{4}$, then its de-Broglie wavelength will be :
A
$\sqrt{2} \lambda$
B
$2 \lambda$
C
$\frac{\lambda}{2}$
D
$\frac{\lambda}{\sqrt{2}}$
3
JEE Main 2023 (Online) 15th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The height of transmitting antenna is $180 \mathrm{~m}$ and the height of the receiving antenna is $245 \mathrm{~m}$. The maximum distance between them for satisfactory communication in line of sight will be :

(given $\mathrm{R}=6400 \mathrm{~km})$
A
$104 \mathrm{~km}$
B
$56 \mathrm{~km}$
C
$48 \mathrm{~km}$
D
$96 \mathrm{~km}$
4
JEE Main 2023 (Online) 15th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
In a linear Simple Harmonic Motion (SHM)

(A) Restoring force is directly proportional to the displacement.

(B) The acceleration and displacement are opposite in direction.

(C) The velocity is maximum at mean position.

(D) The acceleration is minimum at extreme points.

Choose the correct answer from the options given below:
A
${\text {(A), (B) and (D) only }}$
B
(C) and (D) only
C
(A), (B) and (C) Only
D
(A), (C) and (D) only
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