PCM Mock Test (31 Oct) - JEE MCQ
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30 Questions MCQ Test - PCM Mock Test (31 Oct)
PCM Mock Test (31 Oct) for JEE 2024 is part of JEE preparation. The PCM Mock Test (31 Oct) questions and answers have been prepared
according to the JEE exam syllabus.The PCM Mock Test (31 Oct) MCQs are made for JEE 2024 Exam.
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PCM Mock Test (31 Oct) - Question 3
The velocity of sound in air is 330 m/s. The r.m.s. velocity of air molecules (γ = 1.4) is approximately equal to -
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PCM Mock Test (31 Oct) - Question 6
An electric dipole of moment 
is placed at the origin along the X-axis. The electric field at a point 
, whose position vector makess an angle 
with the X-axis, will make an angle 
with the 
-axis, then 
is (
)
Detailed Solution for PCM Mock Test (31 Oct) - Question 6
-axis at a point 
with 
axis
the value of the position vector makes an angle 
into its components
PCM Mock Test (31 Oct) - Question 7
A conducting loop of negligible thickness and of radius a = 6 cm, carries a charge of q = 4μC. The electric field (E) on the axis of symmetry of the loop at a distance of x = 8 cm from the centre of loop is
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PCM Mock Test (31 Oct) - Question 8
Consider a neutral conducting sphere. A positive point charge is placed outside the sphere. The net charge on the sphere is then
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PCM Mock Test (31 Oct) - Question 9
Three infinitely long charge sheets are placed as shown in figure. The electric field at point 
is
is
Detailed Solution for PCM Mock Test (31 Oct) - Question 9
is 
towards 
towards 
is 
is 
away from 
PCM Mock Test (31 Oct) - Question 10
Three concentric spherical metallic shells 
and 
of radii 
and 
have charge densities 
and 
respectively. The potential of 
and 
are
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PCM Mock Test (31 Oct) - Question 27
In the annual function at a school, 504 children participated.
The ratio of number of girls to the number of boys is 5 : 3 respectively. Out of the total girls, 20% participated in dance and remaining girls participated in solo song, group song and drama in the ratio of 2 : 3 : 4 respectively. Two third of the total boys participated in group song and remaining boys participated in solo song and dance in the ratio 4 : 5 respectively.
Q. What is the approximate percentage of the boys who have participated in dance out of the total number of boys?
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PCM Mock Test (31 Oct) - Question 30
The general solution of the differential equation y (x2y + ex)dx – ex dy = 0 is -
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