Electrostatics MCQ for NEET. We covered all the Electrostatics MCQ for NEET in this post for free so that you can practice well for the exam.
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MCQ on Electrostatics for NEET Students
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.
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