1
JEE Main 2021 (Online) 16th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
The magnetic field in a region is given by $$\overrightarrow B = {B_o}\left( {{x \over a}} \right)\widehat k$$. A square loop of side d is placed with its edges along the x and y axes. The loop is moved with a constant velocity $$\overrightarrow v $$ = v0$$\widehat i$$. The emf induced in the loop is :

JEE Main 2021 (Online) 16th March Evening Shift Physics - Electromagnetic Induction Question 76 English
A
$${{{B_o}{v_o}{d^2}} \over {2a}}$$
B
$${{{B_o}v_o^2d} \over {2a}}$$
C
$${{{B_o}{v_o}d} \over {2a}}$$
D
$${{{B_o}{v_o}{d^2}} \over a}$$
2
JEE Main 2021 (Online) 16th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
A bimetallic strip consists of metals A and B. It is mounted rigidly as shown. The metal A has higher coefficient of expansion compared to that of metal B. When the bimetallic strip is placed in a cold bath, it will :

JEE Main 2021 (Online) 16th March Evening Shift Physics - Heat and Thermodynamics Question 256 English
A
Neither bend nor shrink
B
Bend towards the left
C
Not bend but shrink
D
Bend towards the right
3
JEE Main 2021 (Online) 16th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
For the given circuit, comment on the type of transformer used.

JEE Main 2021 (Online) 16th March Evening Shift Physics - Alternating Current Question 119 English
A
Auxiliary transformer
B
Step down transformer
C
Step-up transformer
D
Auto transformer
4
JEE Main 2021 (Online) 16th March Evening Shift
Numerical
+4
-1
Change Language
A solid disc of radius 'a' and mass 'm' rolls down without slipping on an inclined plane making an angle $$\theta$$ with the horizontal. The acceleration of the disc will be $${2 \over b}$$g sin$$\theta$$ where b is ____________. (Round off to the Nearest Integer) (g = acceleration due to gravity, $$\theta$$ = angle as shown in figure)

JEE Main 2021 (Online) 16th March Evening Shift Physics - Rotational Motion Question 123 English
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