1
JEE Main 2021 (Online) 1st September Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
An object of mass 'm' is being moved with a constant velocity under the action of an applied force of 2N along a frictionless surface with following surface profile.

JEE Main 2021 (Online) 1st September Evening Shift Physics - Laws of Motion Question 51 English
The correct applied force vs distance graph will be :
A
JEE Main 2021 (Online) 1st September Evening Shift Physics - Laws of Motion Question 51 English Option 1
B
JEE Main 2021 (Online) 1st September Evening Shift Physics - Laws of Motion Question 51 English Option 2
C
JEE Main 2021 (Online) 1st September Evening Shift Physics - Laws of Motion Question 51 English Option 3
D
JEE Main 2021 (Online) 1st September Evening Shift Physics - Laws of Motion Question 51 English Option 4
2
JEE Main 2021 (Online) 1st September Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
A mass of 5 kg is connected to a spring. The potential energy curve of the simple harmonic motion executed by the system is shown in the figure. A simple pendulum of length 4 m has the same period of oscillation as the spring system. What is the value of acceleration due to gravity on the planet where these experiments are performed?

JEE Main 2021 (Online) 1st September Evening Shift Physics - Simple Harmonic Motion Question 50 English
A
10 m/s2
B
5 m/s2
C
4 m/s2
D
9.8 m/s2
3
JEE Main 2021 (Online) 1st September Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
A capacitor is connected to a 20 V battery through a resistance of 10$$\Omega$$. It is found that the potential difference across the capacitor rises to 2 V in 1 $$\mu$$s. The capacitance of the capacitor is __________ $$\mu$$F. Given : $$\ln \left( {{{10} \over 9}} \right) = 0.105$$
A
9.52
B
0.95
C
0.105
D
1.85
4
JEE Main 2021 (Online) 1st September Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Four particles each of mass M, move along a circle of radius R under the action of their mutual gravitational attraction as shown in figure. The speed of each particle is :

JEE Main 2021 (Online) 1st September Evening Shift Physics - Gravitation Question 79 English
A
$${1 \over 2}\sqrt {{{GM} \over {R(2\sqrt 2 + 1)}}} $$
B
$${1 \over 2}\sqrt {{{GM} \over R}(2\sqrt 2 + 1)} $$
C
$${1 \over 2}\sqrt {{{GM} \over R}(2\sqrt 2 - 1)} $$
D
$$\sqrt {{{GM} \over R}} $$
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