1
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.
2
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 118 English
The logic circuit shown above is equivalent to :
A
JEE Main 2021 (Online) 24th February Evening Shift Physics - Semiconductor Question 118 English Option 1
B
JEE Main 2021 (Online) 24th February Evening Shift Physics - Semiconductor Question 118 English Option 2
C
JEE Main 2021 (Online) 24th February Evening Shift Physics - Semiconductor Question 118 English Option 3
D
JEE Main 2021 (Online) 24th February Evening Shift Physics - Semiconductor Question 118 English Option 4
3
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 72 English
A
3.0 A
B
3.37 A
C
9 A
D
2.25 A
4
JEE Main 2021 (Online) 24th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
A particle is projected with velocity v0 along x-axis. A damping force is acting on the particle which is proportional to the square of the distance from the origin i.e. ma = $$-$$ $$\alpha$$x2. The distance at which the particle stops :
A
$${\left[ {{{3mv_0^2} \over {2\alpha }}} \right]^{{1 \over 3}}}$$
B
$${\left( {{{2{v_0}} \over {3\alpha }}} \right)^{{1 \over 3}}}$$
C
$${\left( {{{3v_0^2} \over {2\alpha }}} \right)^{{1 \over 2}}}$$
D
$${\left( {{{2v_0^2} \over {3\alpha }}} \right)^{{1 \over 2}}}$$
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