1
JEE Main 2021 (Online) 26th February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Find the gravitational force of attraction between the ring and sphere as shown in the diagram, where the plane of the ring is perpendicular to the line joining the centres. If $$\sqrt 8 $$R is the distance between the centres of a ring (of mass 'm') and a sphere (mass 'M') where both have equal radius 'R'.

JEE Main 2021 (Online) 26th February Morning Shift Physics - Gravitation Question 101 English
A
$${{2\sqrt 2 } \over 3}.{{GMm} \over {{R^2}}}$$
B
$${{\sqrt 8 } \over 9}.{{GmM} \over R}$$
C
$${{\sqrt 8 } \over {27}}.{{GmM} \over {{R^2}}}$$
D
$${1 \over {3\sqrt 8 }}.{{GMm} \over {{R^2}}}$$
2
JEE Main 2021 (Online) 26th February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Five equal resistances are connected in a network as shown in figure. The net resistance between the points A and B is :

JEE Main 2021 (Online) 26th February Morning Shift Physics - Current Electricity Question 168 English
A
$${{3R} \over 2}$$
B
$${{R} \over 2}$$
C
2R
D
R
3
JEE Main 2021 (Online) 26th February Morning Shift
Numerical
+4
-1
Change Language
A person standing on a spring balance inside a stationary lift measures 60 kg. The weight of that person if the lift descends with uniform downward acceleration of 1.8 m/s2 will be ______________ N. [g = 10 m/s2]
Your input ____
4
JEE Main 2021 (Online) 26th February Morning Shift
Numerical
+4
-1
Change Language
The circuit contains two diodes each with a forward resistance of 50$$\Omega$$ and with infinite reverse resistance. If the battery voltage is 6V, the current through the 120$$\Omega$$ resistance is ____________ mA.

JEE Main 2021 (Online) 26th February Morning Shift Physics - Semiconductor Question 100 English
Your input ____
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