1
JEE Main 2019 (Online) 9th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
A current loop, having two circular arcs joined by two radial lines is shown in the figure. It carries a current of 10 A. The magnetic field at point O will be close to :

JEE Main 2019 (Online) 9th January Morning Slot Physics - Magnetic Effect of Current Question 178 English
A
1.0 $$ \times $$ 10$$-$$7 T
B
1.5 $$ \times $$ 10$$-$$7 T
C
1.5 $$ \times $$ 10$$-$$5 T
D
1.0 $$ \times $$ 10$$-$$5 T
2
JEE Main 2019 (Online) 9th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
A mixture of 2 moles of helium gas (atomic mass = 4 u), and 1 mole of argon gas (atomic mass = 40 u) is kept at 300 K in a container. The ratio of their rms speeds $$\left[ {{{{V_{rms}}\,(helium)} \over {{V_{rms}}\,(\arg on)}}} \right],$$ is close to :
A
3.16
B
0.32
C
0.45
D
2.24
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