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
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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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