Email
Chat with tutors
Login
Ask Questions, Get Answers
Menu
X
home
ask
tuition
questions
practice
papers
mobile
tutors
pricing
X
Recent questions in JEEMAIN-2014
Questions
>>
Archives
>>
JEEMAIN-2014
If denote microwaves , X rays ,infrared ,gamma rays ,ultra - violet , radio waves and visible parts of the electromagnetic spectrum by M ,X,I,G,U,R and V , the following is the arrangement in ascending order of wavelength :
jeemain
physics
2014
set-10
asked
May 28, 2014
by
yamini.v
0
answers
An example of a perfect diamagnet a superconductor .This implies that when a superconductor is put in a mangetic field of intensity B ,the magnetic field
B
s
inside the superconductor will be such that :
jeemain
physics
2014
set-10
asked
May 28, 2014
by
yamini.v
1
answer
A square frame of side 10 cm along straight wire carrying current 1 A are in the plane of the paper . Starting from close to the wire , the frame moves towards the right with a constant speed of
10
m
s
−
1
(see figure) .The e.m.f. induced at the time the left arm of the frame is at x=10 cm from the wire is :
jeemain
physics
2014
set-10
asked
May 28, 2014
by
yamini.v
1
answer
Four bulbs
B
1
,
B
2
,
B
3
and
B
4
of 100 W each are connected to 220 V main as shown in the figure .The reading in an ideal ammeter will be :
jeemain
physics
2014
set-10
asked
May 28, 2014
by
yamini.v
1
answer
The gap between the plates of a parallel plate capacitor of area A and distance between plates d , is filled with a dielectric whose permittivity varies linearly from
∈
1
at one plate to
∈
2
at the other .The capacitance of capacitor is :
jeemain
physics
2014
set-10
asked
May 28, 2014
by
yamini.v
1
answer
The electric field in a region of space is given by ,
→
E
=
E
0
ˆ
i
+
2
E
0
ˆ
j
where
E
0
=
100
N
/
C
.The flux of this field through a circular surface of radius 0.02 m parallel to the y - z plane is nearly :
jeemain
physics
2014
set-10
asked
May 28, 2014
by
yamini.v
0
answers
The total length of a sonometer wire between fixed ends is 110 m .Two bridges are placed to divide the length of wire in ratio 6 :3 :2 .The tension in the wire is 400 N and the mass per unit length is 0.01 kg/m . What is the minimum common frequency with which three parts can vibrate ?
jeemain
physics
2014
set-10
asked
May 28, 2014
by
yamini.v
0
answers
A body is in simple harmonic motion with time period half second (T=0.5 s) and amplitude one cm (A=1 cm).Find the average velocity in the interval in which it moves from equilibrium position to half of its amplitude .
jeemain
physics
2014
set-10
asked
May 28, 2014
by
yamini.v
1
answer
A gas molecule of mass M at the surface of the Earth has kinetic energy equivalent at
0
0
C
.If it were to go up straight without colliding with any other molecules , how height it would rise ? Assume that the height attained is much less than radius of the earth .(
k
B
is Boltzmann constant)
jeemain
physics
2014
set-10
asked
May 28, 2014
by
yamini.v
0
answers
A gas is compressed from a volume of
2
m
3
to a volume of
1
m
3
at a constant pressure of
100
N
/
m
2
.Then it is heated at constant volume by supplying 150 J of energy . As a result , the internal energy of the gas is :
jeemain
physics
2014
set-10
asked
May 28, 2014
by
yamini.v
0
answers
A block coloured solid sphere of radius R and mass M is inside a cavity with vacuum inside .The walls of the cavity are maintained at temperature
T
0
. The initial temperature of the sphere is
3
T
0
.If the specific heat of the material of the sphere varies is
α
T
3
per unit mass with the temperature T of the sphere , where
α
is a constant , then the time taken for the sphere to cool down to temperature
2
T
0
will be (
σ
i
s
s
t
e
f
a
n
B
o
l
t
z
m
a
n
n
c
o
n
s
t
a
n
t
jeemain
physics
2014
set-10
asked
May 28, 2014
by
yamini.v
1
answer
A large number of liquid drops each of radius r coalesce to from a single drop radius R.The energy released in the process is converted into kinetic energy of the big drop so formed . The speed of the big drop is (given surface tension of liquid T , density
ρ
)
jeemain
physics
2014
set-10
asked
May 28, 2014
by
yamini.v
0
answers
In the diagram shown , the difference in the two tubes of the manometer is 5 cm ,the cross section of the tube at A and B is
6
m
m
2
and
10
m
m
2
respectively . The rate at which water flows through the tube is
(
g
=
10
m
s
−
2
)
jeemain
physics
2014
set-10
asked
May 28, 2014
by
yamini.v
1
answer
The velocity of water in a river is 18 km/hr near the surface . If the river is 5 m deep , find the shearing stress between the horizontal layers of water.The co - efficient of viscosity of water =
10
−
2
poise .
jeemain
physics
2014
set-10
asked
May 28, 2014
by
yamini.v
0
answers
The gravitational field in a region is given by
→
g
=
5
N
/
k
g
ˆ
i
+
12
N
/
k
g
ˆ
j
.The change in the gravitational potential energy of the particle of mass 2 kg when it is taken from the origin to a point (7m ,-3m) is :
jeemain
physics
2014
set-10
asked
May 28, 2014
by
yamini.v
0
answers
A ball of mass 160 g is thrown up at an angle of
60
0
to the horizontal at a speed of
10
m
s
−
1
. the angular momentum of the ball at the highest point of the trajectory with respect to the point from which the ball is thrown is nearly
(
g
=
10
m
s
−
2
)
jeemain
physics
2014
set-10
asked
May 28, 2014
by
yamini.v
0
answers
A particle is released on a vertical smooth semicircular track from point X so that OX make angle
θ
from the vertical (see figure) .The normal reaction of the track on the particle vanishes at point Y where OY makes angle
ϕ
with the horizontal .Then :
jeemain
physics
2014
set-10
asked
May 28, 2014
by
yamini.v
0
answers
Consider a cylinder of mass M resting on a rough horizontal rug that is pulled out from under it with acceleration ' a ' perpendicular to the axis of the cylinder .What is
F
f
r
i
c
t
i
o
n
at point P ? It is assumed that the cylinder does not slip .
jeemain
physics
2014
set-10
asked
May 28, 2014
by
yamini.v
0
answers
A heavy box is to be dragged along a rough horizontal floor . To do so , person A pushes it at an angle
30
0
from the horizontal and requires a minimum force
F
A
, while person B pulls the box at an angle
60
0
from the horizontal and needs minimum force
F
B
. If the coefficient of friction between the box and the floor is
√
3
5
, the ratio
F
A
F
B
is :
jeemain
physics
2014
set-10
asked
May 28, 2014
by
yamini.v
0
answers
A bullet looses
(
1
n
)
t
h
of its velocity passing through one plank . The number of such planks that are required to stop the bullet can be :
jeemain
physics
2014
set-10
asked
May 28, 2014
by
yamini.v
0
answers
How many electrons are involved in the following redox reaction ?
C
r
2
O
2
−
7
+
F
e
2
+
+
C
r
2
O
2
−
4
→
C
r
3
+
+
F
e
3
+
+
C
O
2
(unbalanced)
jeemain
chemistry
2014
set-10
asked
May 25, 2014
by
yamini.v
1
answer
Amongst
L
i
C
l
,
R
b
C
l
,
B
e
C
l
2
and
M
g
C
l
2
the compounds with the greatest and the least ionic character , respectively are :
jeemain
chemistry
2014
set-10
asked
May 25, 2014
by
yamini.v
0
answers
Nickel (Z=28) combines with a uninegative monodentate ligand to form a diamagnetic complex
[
N
i
L
4
]
2
−
. The hybridisation involved and the number of unpaired electrons present in the complex are respectively :
jeemain
chemistry
2014
set-10
asked
May 25, 2014
by
yamini.v
0
answers
Which of these statements is not true ?
jeemain
chemistry
2014
set-10
asked
May 25, 2014
by
yamini.v
0
answers
Example of a three - dimensional silicate is :
jeemain
chemistry
2014
set-10
asked
May 25, 2014
by
yamini.v
0
answers
Amongst the following , identify the species with an atom in +6 oxidation state :
jeemain
chemistry
2014
set-10
asked
May 25, 2014
by
yamini.v
0
answers
Which one of the following ores is known as Malachite :
jeemain
chemistry
2014
set-10
asked
May 25, 2014
by
yamini.v
1
answer
The major product formed when 1,1,1 - trichloro - propane is treated with aqueous potassium hydroxide is :
jeemain
chemistry
2014
set-10
asked
May 25, 2014
by
yamini.v
1
answer
Which one of the following is an example of thermosetting polymers ?
jeemain
chemistry
2014
set-10
asked
May 25, 2014
by
yamini.v
0
answers
The final product formed when Methyl amine is treated with
N
a
N
O
2
and
H
C
l
is :
jeemain
chemistry
2014
set-10
asked
May 25, 2014
by
yamini.v
1
answer
Which one following compounds will not be soluble in sodium bicarbonate ?
jeemain
chemistry
2014
set-10
asked
May 25, 2014
by
yamini.v
0
answers
Williamson synthesis of ether is an example of :
jeemain
chemistry
2014
set-10
asked
May 25, 2014
by
yamini.v
0
answers
The reason for double helical structure of DNA is the operation of :
jeemain
chemistry
2014
set-10
asked
May 25, 2014
by
yamini.v
1
answer
Among the following organic acids , the acid present in rancid butter is :
jeemain
chemistry
2014
set-10
asked
May 25, 2014
by
yamini.v
2
answers
The total number of octahedral void(s) per atom present in a cubic close packed structure is :
jeemain
chemistry
2014
set-10
asked
May 25, 2014
by
yamini.v
1
answer
The observed osmotic pressure for a 0.10 M solution of
F
e
(
N
H
4
)
2
(
S
O
4
)
2
at
24
0
C
is 10.8 atm . The expected and experimental (observed) values of Van't Hoff factor (i) will be respectively :
(
R
=
0.082
L
a
t
m
k
−
1
m
o
l
−
1
)
jeemain
chemistry
2014
set-10
asked
May 25, 2014
by
yamini.v
0
answers
Sulphur dioxide and oxygen were allowed to diffuse through a porous partition .
20
d
m
3
of
S
O
2
diffuses through the porous partition in 60 seconds .The volume of
O
2
in
d
m
3
which diffuses under the similar condition in 30 seconds will be (atomic mass of sulphur =32 u):
jeemain
chemistry
2014
set-10
asked
May 25, 2014
by
yamini.v
1
answer
Zirconium phosphate
[
Z
r
3
(
P
O
4
)
4
]
dissociates into three zirconium cations of charge +4 and four phosphate anions of charge -3 . If molar solubility of zirconium phosphate is denoted by S and its solubility product by
K
s
p
then which of the following relationship between
S
and
K
s
p
is correct ?
jeemain
chemistry
2014
set-10
asked
May 25, 2014
by
yamini.v
1
answer
Which one of the following molecules is paramagnetic ?
jeemain
chemistry
2014
set-10
asked
May 25, 2014
by
yamini.v
1
answer
Choose the correct statement with respect to the vapour pressure of a liquid among the following :
jeemain
chemistry
2014
set-10
asked
May 25, 2014
by
yamini.v
0
answers
Ionization of energy of gaseous Na atoms is
495.5
k
J
m
o
l
−
1
.The lowest possible frequency of light that ionizes a sodium atom is
(
h
=
6.626
×
10
−
34
J
s
N
A
=
6.022
×
10
23
m
o
l
−
1
)
jeemain
chemistry
2014
set-10
asked
May 25, 2014
by
yamini.v
0
answers
If the function
f
(
x
)
=
{
√
2
+
c
o
s
x
−
1
(
π
−
x
)
2
,
x
≠
π
k
,
x
=
π
is continuous at
x
=
π
, then k equals :
jeemain
mathematics
2014
set-10
asked
May 25, 2014
by
yamini.v
0
answers
If m is non - zero number and
∫
x
5
m
−
1
+
2
x
4
m
−
1
(
x
2
m
+
x
m
+
1
)
3
d
x
=
f
(
x
)
+
c
, then
f
(
x
)
is :
jeemain
mathematics
2014
set-10
asked
May 25, 2014
by
yamini.v
0
answers
The contrapositive of the statement " If i am not feeling well , then i will go to the doctor " is :
jeemain
mathematics
2014
set-10
asked
May 25, 2014
by
yamini.v
0
answers
The principal value of
t
a
n
−
1
(
c
o
t
43
π
4
)
is :
jeemain
mathematics
2014
set-10
asked
May 25, 2014
by
yamini.v
0
answers
The function
f
(
x
)
=
|
s
i
n
4
x
|
+
|
c
o
s
2
x
|
, is a periodic function with period :
jeemain
mathematics
2014
set-10
asked
May 25, 2014
by
yamini.v
0
answers
Let
¯
x
,
M
and
σ
2
be respectively the mean ,mode and variance of n observations
x
1
,
x
2
,
.
.
.
,
x
n
and
d
i
=
−
x
i
−
a
,
i
=
1
,
2
,
.
.
.
,
n
, where a is any number.
Statement I : Variance of
d
1
,
d
2
,
.
.
,
d
n
is
σ
2
Statement II :Mean and mode of
d
1
,
d
2
,
.
.
,
d
n
are
¯
x
−
a
and
−
M
−
a
, respectively
jeemain
mathematics
2014
set-10
asked
May 25, 2014
by
yamini.v
0
answers
Let A and E be any two events with positive probabilities :
Statement I :
P
(
E
A
)
≥
P
(
A
E
)
P
(
E
)
Statement II :
P
(
A
E
)
≥
P
(
A
∩
E
)
.
jeemain
mathematics
2014
set-10
asked
May 25, 2014
by
yamini.v
0
answers
If
→
x
=
3
ˆ
i
−
6
ˆ
j
−
ˆ
k
,
→
y
=
ˆ
i
+
4
ˆ
j
−
3
ˆ
k
and
→
z
=
3
ˆ
i
−
4
ˆ
j
−
12
ˆ
k
, then the magnitude of the projection of
→
x
×
→
y
on
→
z
is :
jeemain
mathematics
2014
set-10
asked
May 25, 2014
by
yamini.v
0
answers
If the angle between the line
2
(
x
+
1
)
=
y
=
z
+
4
and the plane
2
x
−
y
+
√
λ
z
+
4
=
0
is
π
6
,then the value of
λ
is :
jeemain
mathematics
2014
set-10
asked
May 24, 2014
by
yamini.v
0
answers
Page:
« prev
1
...
4
5
6
7
8
9
10
...
16
next »
Home
Ask
Tuition
Questions
Practice
Your payment for
is successful.
Continue
...
Please Wait