1
JEE Main 2020 (Online) 3rd September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Two isolated conducting spheres S1 and S2 of radius $${2 \over 3}R$$ and $${1 \over 3}R$$ have 12 $$\mu $$C and –3 $$\mu $$C charges, respectively, and are at a large distance from each other. They are now connected by a conducting wire. A long time after this is done the charges on S1 and S2 are respectively :
A
4.5 $$\mu $$C on both
B
+4.5 $$\mu $$C and –4.5 $$\mu $$C
C
6 $$\mu $$C and 3 $$\mu $$C
D
3 $$\mu $$C and 6 $$\mu $$C
2
JEE Main 2020 (Online) 3rd September Morning Slot
Numerical
+4
-0
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A cricket ball of mass 0.15 kg is thrown vertically up by a bowling machine so that it rises to a maximum height of 20 m after leaving the machine. If the part pushing the ball applies a constant force F on the ball and moves horizontally a distance of 0.2 m while launching the ball, the value of F (in N) is (g = 10 ms–2) ____.
Your input ____
3
JEE Main 2020 (Online) 3rd September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
JEE Main 2020 (Online) 3rd September Morning Slot Physics - Heat and Thermodynamics Question 273 English Consider a gas of triatomic molecules. The molecules are assumed to be triangular and made of massless rigid rods whose vertices are occupied by atoms. The internal energy of a mole of the gas at temperature T is :
A
$${3 \over 2}RT$$
B
$${9 \over 2}RT$$
C
$${5 \over 2}RT$$
D
3RT
4
JEE Main 2020 (Online) 3rd September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
In a Young’s double slit experiment, light of 500 nm is used to produce an interference pattern. When the distance between the slits is 0.05 mm, the angular width (in degree) of the fringes formed on the distance screen is close to
A
0.17o
B
1.7o
C
0.57o
D
0.07o
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