JEE Advanced Electrostatics Questions. We covered all the JEE Advanced Electrostatics Questions in this post for free so that you can practice well for the exam.
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JEE Advanced Electrostatics Questions for Students
If the electric field is uniform, then the electric lines of force are
1. Divergent
2. Convergent
3. Circular
4. Parallel
Option 4 – Parallel
Electric potential is a
1. Vector quantity
2. Scalar quantity
3. Fictitious quantity
4. Neither vector nor scalar
Option 2 – Scalar quantity
The electric force on a charge of 20 coul is 1100 N. The electric field is
1. 5 N/c
2. 50 N/c
3. 500 N/c
4. 2000 N/c
Option 2 – 50 N/c
The electric field at distances 2 mt and 3 mt from a point charge are in the ratio
1. 2 : 3
2. 3 : 2
3. 4 : 9
4. 9 : 4
Option 4 – 9 : 4
The electric field at a point on the axis of a short dipole is 20 N/c. The electric intensity at a point at the same distance on the equatorial line is
1. 20 N/c
2. 40 N/c
3. 10 N/c
4. 5 N/c
Option 3 – 10 N/c
The couple acting on a dipole of the moment 20 coul-mt in an electric field of 1 N/c is 10 N-m. The angle between the direction of the electric field and the length of the electric dipole is
1. 90°
2. 60°
3. 30°
4. 45°
Option 3 – 30°
The electric field at a point inside a hollow charged spherical conductor is
1. Zero
2. Changes with distance from the center of the sphere
3. Constant
4. None
Option 1 – Zero
On a surface enclosed by an electric dipole, the flux through the surface is
1. Infinite
2. Positive
3. Negative
4. Zero
Option 4 – Zero
The ratio of the electric field due to an electric dipole on its axis and the perpendicular bisector of the dipole is
1. 1 : 2
2. 2 : 1
3. 1 : 4
4. 4 : 1
Option 2 – 2 : 1
The distance between two charges is doubled then the force between them would become
1. Half
2. One-fourth
3. Doubled
4. Four-times
Option 2 – One-fourth
When the distance between two charged particles is halved, the force between them becomes
1. One-fourth
2. One half
3. Double
4. Four times
Option 4 – Four times
Two charges are placed at a certain distance apart. A brass sheet is placed between them. The force between them will be
1. Increase
2. Decrease
3. Remains unchanged
4. None
Option 1 – Increase
Assertion: The stream of water flowing at high speed from a garden hose pipe tends to spread like a fountain when held vertically up but tends to narrow down when held vertically down. Reason: In any steady flow of an incompressible fluid, the volume flow rate of the fluid is variable.
(A) The assertion is True. The reason is True; Reason is a correct explanation for Assertion.
(B) The assertion is True, and Reason is True; Reason is not a correct explanation for Assertion.
(C) The assertion is True, Reason is False.
(D) The assertion is False, Reason is True.
Option c – The assertion is True, Reason is False.
The harmonics which are present in a pipe open at one end are
(A) odd harmonics.
(B) even harmonics.
(C) no harmonics are present
(D) even as well as odd harmonics.
Option a – odd harmonics.
A block of copper is subjected to a uniform pressure P of such magnitude that its volume decreases by 0.001%. The density of the block will
(A) decrease by 0.001%
(B) increase by 0.001%
(C) decrease by 0.1%
(D) increase by 0.1%
Option b – increase by 0.001%
A string fixed at both ends is 8 m long and has a mass of 0.120 kg. It is subjected to a tension of 72 N and set oscillating. The longest possible wavelength and frequency of the sound wave
(A) 16 m, 4.33 Hz
(B) 8 m, 6 Hz
(C) 16 m, 10 Hz
(D) 8 m, 4.33 Hz
Option a – 16 m, 4.33 Hz
The tensions in two identical strings are 72 N and 162 N. The ratio of the fundamental frequencies produced by them will be
(A) 2/3
(B) 2/5
(C) 4/9
(D) 3/2
Option a – 2/3
A soap bubble in a vacuum has a radius of 6 cm and another soap bubble in a vacuum has a radius of 8 cm. If two bubbles coalesce under isothermal conditions, then the radius of the new bubble is
(A) 1 cm
(B) 4 cm
(C) 10 cm
(D) 5 cm
Option c – 10 cm
A drop of liquid having a radius of 2 mm has a terminal velocity of 30 cm/s. The terminal velocity of a drop of 1 mm radius of the same liquid will be
(A) 40 cm/s
(B) 15 cm/s
(C) 10 cm/s
(D) 7.5 cm/s
Option d – 7.5 cm/s
If two waves of wavelengths 50 cm and 51 cm produce 12 beats per second, then the velocity of sound is
(A) 306 m/s
(B) 331 m/s
(C) 340 m/s
(D) 360 m/s
Option a – 306 m/s
The surface energy of a liquid drop is u. If it is sprayed into 1000 equal droplets, then its surface energy becomes
(A) 0.5 u
(B) 10 u
(C) 100 u
(D) 1000 u
Option b – 10 u
Choose the INCORRECT statement. Two bubbles A and B while rising through a fluid attain terminal velocity. If bubble B rises with lesser terminal velocity than A, then
(A) bubble B is likely to have a smaller radius than bubble A.
(B) densities of the media of the two bubbles might be different.
(C) bubble B might be at a deeper height in fluid than bubble A.
(D) bubble B is decelerating at a greater rate than bubble A.
Option d – bubble B is decelerating at a greater rate than bubble A.
Two identical wires of substance A and B are taken and equal stretching forces are applied to them along the length. If the elongation of A is more than B, then
(A) A is more elastic than B.
(B) A and B are equally elastic.
(C) B is more elastic than A.
(D) cannot say about the elastic nature of the substance.
Option c – B is more elastic than A.
Transverse wave has the following directions to observe, choose the CORRECT statement.
(A) The wave travels along the z-axis and particles of the medium travel in the x-y plane.
(B) The wave travels along the z-axis and particles of the medium travel in the y-z plane.
(C) The wave travels along the x-axis and particles of the medium travel in the x-z plane.
(D) The wave travels along the x-axis and particles of the medium travel in the x-y plane.
Option a – The wave travels along the z-axis and particles of the medium travel in the x-y plane.
By sucking through a straw, a student can reduce the pressure in his lungs to 750 mm of Hg (density = 13.6 g/cm³). Using the straw, what is the maximum depth, he can drink water from a glass?
(A) 10 cm
(B) 1.36 cm
(C) 13.6 cm
(D) 75 cm
Option c – 13.6 cm
If the velocity of sound in a gas is 340 m/s and the distance between compression and the nearest rarefaction is 1 m, then the frequency of sound is
(A) 85 Hz
(B) 170 Hz
(C) 340 Hz
(D) 680 Hz
Option b – 170 Hz
A 2-long rod of radius 2 cm which is fixed m from one end, is given a twist of 0.8 radians. The shear strain developed will be
(A) 0.002
(B) 0.004
(C) 0.008
(D) 0.016
Option c – 0.008
The temperature at which the velocity of sound in the air will be 1.5 times its velocity at 0 °C is
(A) 614.2 °C
(B) 514.4 °C
(C) 341.25 °C
(D) 241.4 °C
Option c – 341.25 °C
A force of 800 kg-wt can break a wire. The force necessary to break another wire of the same material but half the cross-sectional area will be
(A) 1200 kg-wt
(B) 200 kg-wt
(C) 400 kg-wt
(D) 150 kg-wt
Option c – 400 kg-wt
A small sphere is dropped into a medium of infinite extent. As the sphere falls, the net force acting on it
(A) remains constant.
(B) increases for some time and then becomes constant.
(C) decreases for some time and then becomes constant.
(D) decreases for some time and then becomes zero.
Option d – decreases for some time and then becomes zero.
In the case of streamlining, ( Electrostatics MCQ for NEET )
(A) the velocity of a fluid particle remains constant.
(B) the velocity of all fluid particles at a given instant is constant.
(C) the velocity of all fluid particles crossing a given position is constant.
(D) the speed of a fluid particle remains constant.
Option c – the velocity of all fluid particles crossing a given position is constant.
If the ratio of amplitudes of waves is 2 : 1, then the ratio of minimum and maximum intensities is
(A) 9 : 1
(B) 1 : 9
(C) 4 : 1
(D) 1 : 4
Option b – 1 : 9
Raindrops fall from a great height under gravity. Choose the CORRECT statement.
(A) Their velocity continuously increases till they hit the earth with the same final velocity.
(B) They fall with a terminal velocity that is different for drops of different sizes.
(C) Their velocity goes on increasing continuously till they hit the earth, and the final velocity of each drop is different.
(D) They fall with a terminal velocity which is the same for every drop.
Option b – They fall with a terminal velocity that is different for drops of different sizes.
A longitudinal wave is passing through the air column in the form of compression and rarefaction. In consecutive compression and rarefaction,
(A) Boyle’s law is obeyed.
(B) density remains constant.
(C) the bulk modulus of air varies.
(D) there is no transfer of heat.
Option d – there is no transfer of heat.
The distance between H and CI ions in the HCl molecule is 1.28 Å. What will be the potential due to this dipole at a distance of 16 Å on the axis of the dipole?
(A) 0.072 V
(B) 6.4 V
(C) 16 V
(D) 0.8 V
Option a – 0.072 V
At a point in space, the electric field points south. In the region surrounding this point, the rate of change of potential will be zero along ………
(A) North
(B) south
(C) north-south
(D) east-west
Option d – east-west
Two charges 4 μC and 4 µC are placed at points P and Q, 8 cm apart. An equipotential surface of the system
(A) is a sphere of radius 8 cm, where the center is at the midpoint of PQ.
(B) is the perpendicular bisector plane of PQ.
(C) are an ellipse of a major axis of 16 cm and a minor axis of 8 cm centered at the mid-point of PQ.
(D) doesn’t exist.
Option b – is the perpendicular bisector plane of PQ.
If three charges are placed at the vertices of an equilateral triangle of charge 2 µC each. What is the net potential energy, if the side of an equilateral triangle is 4 cm?
(A) 0.9 J
(B) 1.8 J
(C) 2.7 J
(D) 3.6 J
Option c – 2.7 J
A conductor with a negative charge
(A) is always at +ve potential.
(B) is always at zero potential.
(C) is always at negative potential.
(D) maybe at +ve, zero, or -ve potential.
Option d – maybe at +ve, zero, or -ve potential.
If the electric field is given by E-6x+2y+32, then the electric flux through a surface of area 240 units lying in the x – y plane is
(A) 600 units
(B) 240 units
(C) 720 units
(D) 480 units
Option c – 720 units
The kinetic energy of a charged particle decreases by 20 J as it moves from a point at potential 150 V to a point at potential 250 V. Find the charge on the particle
(A) 0.1 C
(B) 0.2 C
(C) 0.4 C
(D) 0.5 C
Option b – 0.2 C
The S.I. unit of electric flux is
(A) amperex second
(B) newton per coulomb
(C) volt x metre
(D) joule per coulomb
Option c – volt x metre
Small drops of the same size are charged to 15 volts each. If 8 drops coalesce to form a single large drop, its potential will be
(A) 15 V
(B) 30 V
(C) 60 V
(D) 120 V
Option c – 60 V
A charge of 20 µC is placed at the center of a spherical shell of radius 10 cm. What will be the work done in moving a charge of +1 µC on its surface through a distance of 4 cm?
(A) 5 J
(B) 0
(C) 0.2 J
(D) Data insufficient
Option b – 0
Assertion: At any point inside a charged conducting sphere, the electrostatic potential remains constant. Reason: At any point inside a charged conducting sphere, electric intensity is zero.
(A) The assertion is True, Reason is True; Reason is a correct explanation for Assertion.
(B) The assertion is True, and Reason is True; Reason is not a correct explanation for Assertion.
(C) The assertion is True, Reason is False.
(D) The assertion is False, Reason is True.
Option a – The assertion is True, Reason is True; Reason is a correct explanation for Assertion.
In a hydrogen atom, the electron and the proton are bound together at a separation of about 0.53 Å. If the zero of potential energy is taken at an infinite separation of the electron from the proton, the potential energy of the electron-proton system is
(A) – 54.4 eV
(B) – 27.2 eV
(C) – 13.6 eV
(D) zero
Option b – – 27.2 eV
The electric potential V at any point O (x, y, z all in meter) in space is given by V = 3.5x² volt. The electric field at the point (1 m, 0, 2 m) in volt/meter is
(A) 7 along the negative X – axis
(B) 7 along the positive X – axis
(C) 14 along the negative Z-axis
(D) 14 along the positive Z-axis
Option a – 7 along the negative X – axis
We covered all the jee advanced electrostatics questions above in this post for free so that you can practice well for the exam.
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