1
JEE Main 2019 (Online) 11th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The variation of refractive index of a crown glass thin prism with wavelength of the incident light is shown. Which of the following graphs is the correct one, if Dm is the angle of minimum deviation?

JEE Main 2019 (Online) 11th January Morning Slot Physics - Geometrical Optics Question 143 English
A
JEE Main 2019 (Online) 11th January Morning Slot Physics - Geometrical Optics Question 143 English Option 1
B
JEE Main 2019 (Online) 11th January Morning Slot Physics - Geometrical Optics Question 143 English Option 2
C
JEE Main 2019 (Online) 11th January Morning Slot Physics - Geometrical Optics Question 143 English Option 3
D
JEE Main 2019 (Online) 11th January Morning Slot Physics - Geometrical Optics Question 143 English Option 4
2
JEE Main 2019 (Online) 11th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
In the figure shown below, the charge on the left plate of the 10$$\mu $$F capacitor is –30$$\mu $$C. The charge on the right plate of the 6 $$\mu $$F capacitor is :

JEE Main 2019 (Online) 11th January Morning Slot Physics - Capacitor Question 105 English
A
+ 12 $$\mu $$C
B
+ 18 $$\mu $$C
C
$$-$$ 18 $$\mu $$C
D
$$-$$ 12 $$\mu $$C
3
JEE Main 2019 (Online) 11th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Three charges Q, + q and + q are placed at the vertices of a right-angle isosceles triangle as shown below. The net electrostatic energy of the configuration is zero, if the value of Q is :

JEE Main 2019 (Online) 11th January Morning Slot Physics - Electrostatics Question 148 English
A
$${{ - q} \over {1 + \sqrt 2 }}$$
B
+ q
C
$$-$$ 2q
D
$${{ - \sqrt 2 q} \over {\sqrt 2 + 1}}$$
4
JEE Main 2019 (Online) 11th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The given graph shows variation (with distance r form centre) of :

JEE Main 2019 (Online) 11th January Morning Slot Physics - Electrostatics Question 147 English
A
Electric field of a uniformly charged sphere
B
Electric field of a uniformly charged spherical shell
C
Potential of a uniformly charged sphere
D
Potential of a uniformly charged spherical shell
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