1
JEE Main 2020 (Online) 4th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
A wire A, bent in the shape of an arc of a circle, carrying a current of 2 A and having radius 2 cm and another wire B, also bent in the shape of arc of a circle, carrying a current of 3 A and having radius of 4 cm, are placed as shown in the figure. The ratio of the magnetic fields due to the wires A and B at the common centre O is : JEE Main 2020 (Online) 4th September Morning Slot Physics - Magnetic Effect of Current Question 137 English
A
4 : 6
B
6 : 4
C
2 : 5
D
6 : 5
2
JEE Main 2020 (Online) 4th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
A small bar magnet is moved through a coil at constant speed from one end to the other. Which of the following series of observations will be seen on the galvanometer G attached across the coil? JEE Main 2020 (Online) 4th September Morning Slot Physics - Electromagnetic Induction Question 86 English
Three positions shown describe :
(a) the magnet's entry
(b) magnet is completely inside and
(c) magnet's exit.
A
JEE Main 2020 (Online) 4th September Morning Slot Physics - Electromagnetic Induction Question 86 English Option 1
B
JEE Main 2020 (Online) 4th September Morning Slot Physics - Electromagnetic Induction Question 86 English Option 2
C
JEE Main 2020 (Online) 4th September Morning Slot Physics - Electromagnetic Induction Question 86 English Option 3
D
JEE Main 2020 (Online) 4th September Morning Slot Physics - Electromagnetic Induction Question 86 English Option 4
3
JEE Main 2020 (Online) 4th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Match the $${{{C_P}} \over {{C_V}}}$$ ratio for ideal gases with different type of molecules :

Molecule Type CP/CV
(A) Monatomic (I) 7/5
(B) Diatomic rigid molecules (II) 9/7
(C) Diatomic non-rigid molecules (III) 4/3
(D) Triatomic rigid molecules (IV) 5/3
A
(A)-(III), (B)-(IV), (C)-(II), (D)-(I)
B
(A)-(IV), (B)-(II), (C)-(I), (D)-(III)
C
(A)-(IV), (B)-(I), (C)-(II), (D)-(III)
D
(A)-(II), (B)-(III), (C)-(I), (D)-(IV)
4
JEE Main 2020 (Online) 4th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Take the breakdown voltage of the
zener diode used in the given circuit as 6V.
For the input voltage shown in figure below,
the time variation of the output voltage is:
(Graphs drawn are schematic and not to scale) JEE Main 2020 (Online) 4th September Morning Slot Physics - Semiconductor Question 139 English
A
JEE Main 2020 (Online) 4th September Morning Slot Physics - Semiconductor Question 139 English Option 1
B
JEE Main 2020 (Online) 4th September Morning Slot Physics - Semiconductor Question 139 English Option 2
C
JEE Main 2020 (Online) 4th September Morning Slot Physics - Semiconductor Question 139 English Option 3
D
JEE Main 2020 (Online) 4th September Morning Slot Physics - Semiconductor Question 139 English Option 4
JEE Main Papers
2023
2021
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12