1
JEE Main 2022 (Online) 29th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

A block of mass 40 kg slides over a surface, when a mass of 4 kg is suspended through an inextensible massless string passing over frictionless pulley as shown below.

The coefficient of kinetic friction between the surface and block is 0.02. The acceleration of block is. (Given g = 10 ms$$-$$2.)

JEE Main 2022 (Online) 29th June Evening Shift Physics - Laws of Motion Question 50 English

A
1 ms$$-$$2
B
1/5 ms$$-$$2
C
4/5 ms$$-$$2
D
8/11 ms$$-$$2
2
JEE Main 2022 (Online) 29th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

In the given figure, the block of mass m is dropped from the point 'A'. The expression for kinetic energy of block when it reaches point 'B' is

JEE Main 2022 (Online) 29th June Evening Shift Physics - Work Power & Energy Question 46 English

A
$${1 \over 2}mg\,{y_0}^2$$
B
$${1 \over 2}mg\,{y^2}$$
C
$$mg(y - {y_0})$$
D
$$mg{y_0}$$
3
JEE Main 2022 (Online) 29th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

A block of mass M placed inside a box descends vertically with acceleration 'a'. The block exerts a force equal to one-fourth of its weight on the floor of the box. The value of 'a' will be

A
$${g \over 4}$$
B
$${g \over 2}$$
C
$${3g \over 4}$$
D
g
4
JEE Main 2022 (Online) 29th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

If the electric potential at any point (x, y, z) m in space is given by V = 3x2 volt. The electric field at the point (1, 0, 3) m will be :

A
3 Vm$$-$$1, directed along positive x-axis.
B
3 Vm$$-$$1, directed along negative x-axis.
C
6 Vm$$-$$1, directed along positive x-axis.
D
6 Vm$$-$$1, directed along negative x-axis.
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