1
JEE Main 2021 (Online) 24th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
In the given figure, a body of mass M is held between two massless springs, on a smooth inclined plane. The free ends of the springs are attached to firm supports. If each spring has spring constant k, the frequency of oscillation of given body is :

JEE Main 2021 (Online) 24th February Evening Shift Physics - Simple Harmonic Motion Question 91 English
A
$${1 \over {2\pi }}\sqrt {{{2k} \over {Mg\sin \alpha }}} $$
B
$${1 \over {2\pi }}\sqrt {{k \over {Mg\sin \alpha }}} $$
C
$${1 \over {2\pi }}\sqrt {{{2k} \over M}} $$
D
$${1 \over {2\pi }}\sqrt {{k \over {2M}}} $$
2
JEE Main 2021 (Online) 24th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
If the source of light used in a Young's double slit experiment is changed from red to violet :
A
the fringes will become brighter.
B
the intensity of minima will increase.
C
consecutive fringe lines will come closer.
D
the central bright fringe will become a dark fringe.
3
JEE Main 2021 (Online) 24th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
JEE Main 2021 (Online) 24th February Evening Shift Physics - Semiconductor Question 112 English
The logic circuit shown above is equivalent to :
A
JEE Main 2021 (Online) 24th February Evening Shift Physics - Semiconductor Question 112 English Option 1
B
JEE Main 2021 (Online) 24th February Evening Shift Physics - Semiconductor Question 112 English Option 2
C
JEE Main 2021 (Online) 24th February Evening Shift Physics - Semiconductor Question 112 English Option 3
D
JEE Main 2021 (Online) 24th February Evening Shift Physics - Semiconductor Question 112 English Option 4
4
JEE Main 2021 (Online) 24th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Figure shows a circuit that contains four identical resistors with resistance R = 2.0$$\Omega$$, two identical inductors with inductance L = 2.0 mH and an ideal battery with emf E = 9V. The current 'i' just after the switch 'S' is closed will be :

JEE Main 2021 (Online) 24th February Evening Shift Physics - Electromagnetic Induction Question 68 English
A
3.0 A
B
3.37 A
C
9 A
D
2.25 A
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