1
JEE Main 2022 (Online) 25th June Morning Shift
+4
-1

If force $$\overrightarrow F = 3\widehat i + 4\widehat j - 2\widehat k$$ acts on a particle position vector $$2\widehat i + \widehat j + 2\widehat k$$ then, the torque about the origin will be :

A
$$3\widehat i + 4\widehat j - 2\widehat k$$
B
$$- 10\widehat i + 10\widehat j + 5\widehat k$$
C
$$10\widehat i + 5\widehat j - 10\widehat k$$
D
$$10\widehat i + \widehat j - 5\widehat k$$
2
JEE Main 2021 (Online) 31st August Morning Shift
+4
-1
A body of mass M moving at speed V0 collides elastically with a mass 'm' at rest. After the collision, the two masses move at angles $$\theta$$1 and $$\theta$$2 with respect to the initial direction of motion of the body of mass M. The largest possible value of the ratio M/m, for which the angles $$\theta$$1 and $$\theta$$2 will be equal, is :
A
4
B
1
C
3
D
2
3
JEE Main 2021 (Online) 31st August Morning Shift
+4
-1
Angular momentum of a single particle moving with constant speed along circular path :
A
changes in magnitude but remains same in the direction
B
remains same in magnitude and direction
C
remains same in magnitude but changes in the direction
D
is zero
4
JEE Main 2021 (Online) 27th August Morning Shift
+4
-1
Moment of inertia of a square plate of side l about the axis passing through one of the corner and perpendicular to the plane of square plate is given by :
A
$${{M{l^2}} \over 6}$$
B
$${M{l^2}}$$
C
$${{M{l^2}} \over {12}}$$
D
$${2 \over 3}M{l^2}$$
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