Current Electricity Class 12 MCQ NEET

5/5 - (1 vote)

Current Electricity Class 12 MCQ NEET. We covered all the Current Electricity Class 12 MCQ NEET in this post for free so that you can practice well for the exam.

Install our MCQTUBE Android app from the Google Play Store and prepare for any competitive government exams for free.

We have divided the complete NEET syllabus into several small posts on our website for your convenience. You will get their respective links in the related posts section provided below.

Related Posts:

Questions hide

MCQ on Current Electricity for NEET Students

A copper plate can be heated by

In a common emitter transistor amplifier, an increase of 40 μA in the base current causes an increase of 0.5 mA in the collector current. The change in emitter current is

A child is looking at the view down on the ground of an airplane at an altitude of 12 km. Assuming that his pupil’s diameter is 5 mm and the wavelength of visible light is 500 nm, the child will be able to resolve linear objects of the size is about

Photons absorbed in the matter are converted to heat. A source emitting n photons per second of frequency v is used to convert 500 g of ice into the water at 0 °C. Then, the time T took from 0°C to the conversion

A double convex lens made of glass of refractive index 1.5 has both radii of curvature of magnitude 10 cm. If an object is placed at a distance of 20 cm from this lens, the position of the image formed is

Two sources of light of wavelength 2000 Å and 3000 Å are used in Young’s double slit experiment simultaneously. Which orders of fringes of two wavelength patterns coincide?

A second harmonic has to be generated in a string of length 40 cm stretched between two rigid supports. The point where the string has to be plucked and touched are

Spherical wavefronts, emitted from a point source, strike a plane-reflecting surface. What will happen to these wavefronts, immediately after reflection?

A small telescope has an objective lens of focal length 120 cm and an eyepiece of focal length 5.0 cm. The magnifying power of the telescope for viewing distant objects when the final image is formed at a distance of 30 cm is

From Brewster’s law, except for polished metallic surfaces, the polarising angle

A source of unknown frequency gives 4 beats/s when sounded with a source of known frequency 250 Hz. The second harmonic of the source of unknown frequency gives five beats per second when sounded with a source of frequency 513 Hz. The unknown frequency is

Choose the incorrect statement.

Out of the following which one is not possible energy for a photon to be emitted by a hydrogen atom according to Bohr’s atomic model?

The rear side of the truck is open and a box of mass 20 kg is placed 5 m away from the open end. The coefficient of friction between the box and the surface below it is 0.2. The truck starts from rest with an acceleration of 3.5 m s2 on a straight road. At what distance from the starting point does the box fall off the truck? Take g = 10 m/s²

A cricketer can throw a ball to a maximum horizontal distance of 120 m. How high above the ground can the cricketer throw the same ball?

Two spheres of the same material have radii 1 m and 9 m and temperatures of 5727 °C and 1727 °C respectively. The energy radiated per second by the first sphere is

If the current sensitivity of a galvanometer is doubled by doubling the number of turns, then its voltage sensitivity will be

A wheel with a moment of inertia of 0.65 kg m² and a radius of 0.4 m is rolling on the road without sliding with an angular velocity of 10 rad/s. If the translational kinetic energy of the wheel is 55% total kinetic energy, the mass of the wheel is

The waves that are bent down by the ionosphere are ……… ( Current Electricity Class 12 MCQ NEET )

Assertion: The Laplace correction is based on the fact that the exchange of heat between the region of compression and rarefaction in the air is not possible. Reason: Air is a bad conductor of heat and the velocity of sound in air is high.

MCQ on Current Electricity for NEET Students

A copper plate can be heated by

(A) placing it in a time-varying magnetic field.

(B) placing in a space with varying magnetic fields, but does not vary with time.

(D) both (A) and (C) are correct.

Option d – both (A) and (C) are correct.

In a common emitter transistor amplifier, an increase of 40 μA in the base current causes an increase of 0.5 mA in the collector current. The change in emitter current is

(A) 1080 mA

(B) 1080 μA

(D) 540 μA

Option d – 540 μA

A child is looking at the view down on the ground of an airplane at an altitude of 12 km. Assuming that his pupil’s diameter is 5 mm and the wavelength of visible light is 500 nm, the child will be able to resolve linear objects of the size is about

(A) 3.02 m

(B) 4.88 m

(D) 0.87 m

Option c – 1.47 m

Photons absorbed in the matter are converted to heat. A source emitting n photons per second of frequency v is used to convert 500 g of ice into the water at 0 °C. Then, the time T took from 0°C to the conversion

(A) decreases with increasing n, with v fixed.

(B) decreases with n fixed, v increasing.

(D) All of these.

Option d – All of these.

A double convex lens made of glass of refractive index 1.5 has both radii of curvature of magnitude 10 cm. If an object is placed at a distance of 20 cm from this lens, the position of the image formed is

(A) 20 cm and on the same side as the object.

(B) 20 cm and on the opposite sides of the object.

(D) 40 cm and on the opposite side of the object.

Option b – 20 cm and on the opposite sides of the object.

Two sources of light of wavelength 2000 Å and 3000 Å are used in Young’s double slit experiment simultaneously. Which orders of fringes of two wavelength patterns coincide?

(A) 3rd order of 1st source and 5th of the 2nd

(B) 4th order of 1st and 2nd order of 2nd

(D) 4th order of 1st and 6th order of 2nd

Option c – 6th order of 1st and 4th order of 2nd

A second harmonic has to be generated in a string of length 40 cm stretched between two rigid supports. The point where the string has to be plucked and touched are

(A) plucked at 10 cm and touched at 20 cm.

(B) plucked at 10 cm and touched at 15 cm.

(D) plucked at 20 cm and touched at 30 cm.

Option a – plucked at 10 cm and touched at 20 cm.

Spherical wavefronts, emitted from a point source, strike a plane-reflecting surface. What will happen to these wavefronts, immediately after reflection?

(A) Wavefronts will remain spherical with the same curvature, both in magnitude and sign.

(B) Wavefronts will become plane wavefronts.

(D) Wavefronts will remain spherical, but with different curvature, both in magnitude and sign.

Option c – Wavefronts will remain spherical, with the same curvature, but a sign of curvature reversed.

A small telescope has an objective lens of focal length 120 cm and an eyepiece of focal length 5.0 cm. The magnifying power of the telescope for viewing distant objects when the final image is formed at a distance of 30 cm is

(A) 33.6

(B) 28

(D) 11.4

Option b – 28

From Brewster’s law, except for polished metallic surfaces, the polarising angle

(A) depends on the wavelength and is different for different colors.

(B) independent of wavelength and is different for different colors.

(D) depends on the wavelength and is the same for different colors.

Option a – depends on the wavelength and is different for different colors

A source of unknown frequency gives 4 beats/s when sounded with a source of known frequency 250 Hz. The second harmonic of the source of unknown frequency gives five beats per second when sounded with a source of frequency 513 Hz. The unknown frequency is

(A) 254 Hz

(B) 246 Hz

(D) 260 Hz

Option a – 254 Hz

Choose the incorrect statement.

(A) When a body does some work against friction, its kinetic energy decreases.

(B) Work done by a body is independent of time.

(D) When work done over a closed path is positive, force must be conservative.

Option d – When work done over a closed path is positive, force must be conservative.

Out of the following which one is not possible energy for a photon to be emitted by a hydrogen atom according to Bohr’s atomic model?

(A) 0.65 eV

(B) 1.9 eV

(D) 2.55 eV

Option c – 4.9 eV

The rear side of the truck is open and a box of mass 20 kg is placed 5 m away from the open end. The coefficient of friction between the box and the surface below it is 0.2. The truck starts from rest with an acceleration of 3.5 m s2 on a straight road. At what distance from the starting point does the box fall off the truck? Take g = 10 m/s²

(A) 20 m

(B) 13.5 m

(D) 10 m

Option c – 11.67 m

A cricketer can throw a ball to a maximum horizontal distance of 120 m. How high above the ground can the cricketer throw the same ball?

(A) 100 m

(B) 50 m

(D) 60 m

Option d – 60 m

Two spheres of the same material have radii 1 m and 9 m and temperatures of 5727 °C and 1727 °C respectively. The energy radiated per second by the first sphere is

(A) greater than that by the second.

(B) less than that by the second.

(D) nullified by the second sphere.

Option c – same as that of the second.

If the current sensitivity of a galvanometer is doubled by doubling the number of turns, then its voltage sensitivity will be

(A) unchanged.

(B) doubled

(D) four times the original.

Option a – unchanged.

A wheel with a moment of inertia of 0.65 kg m² and a radius of 0.4 m is rolling on the road without sliding with an angular velocity of 10 rad/s. If the translational kinetic energy of the wheel is 55% total kinetic energy, the mass of the wheel is

(A) 1.75 kg

(B) 2.39 kg

(D) 5 kg

Option d – 5 kg

The waves that are bent down by the ionosphere are ……… ( Current Electricity Class 12 MCQ NEET )

(A) ground waves

(B) sky waves

(D) space waves

Option b – sky waves

Assertion: The Laplace correction is based on the fact that the exchange of heat between the region of compression and rarefaction in the air is not possible. Reason: Air is a bad conductor of heat and the velocity of sound in air is high.

(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.

(D) The assertion is False, Reason is True.

Option a – The assertion is True, Reason is True; Reason is a correct explanation for Assertion.

We covered all the current electricity class 12 mcq neet above in this post for free so that you can practice well for the exam.

Check out the latest MCQ content by visiting our mcqtube website homepage.

Also, check out:

MCQ on Current Electricity for NEET Students

A copper plate can be heated by

In a common emitter transistor amplifier, an increase of 40 μA in the base current causes an increase of 0.5 mA in the collector current. The change in emitter current is

A child is looking at the view down on the ground of an airplane at an altitude of 12 km. Assuming that his pupil’s diameter is 5 mm and the wavelength of visible light is 500 nm, the child will be able to resolve linear objects of the size is about

Photons absorbed in the matter are converted to heat. A source emitting n photons per second of frequency v is used to convert 500 g of ice into the water at 0 °C. Then, the time T took from 0°C to the conversion

A double convex lens made of glass of refractive index 1.5 has both radii of curvature of magnitude 10 cm. If an object is placed at a distance of 20 cm from this lens, the position of the image formed is

Two sources of light of wavelength 2000 Å and 3000 Å are used in Young’s double slit experiment simultaneously. Which orders of fringes of two wavelength patterns coincide?

A second harmonic has to be generated in a string of length 40 cm stretched between two rigid supports. The point where the string has to be plucked and touched are

Spherical wavefronts, emitted from a point source, strike a plane-reflecting surface. What will happen to these wavefronts, immediately after reflection?

A small telescope has an objective lens of focal length 120 cm and an eyepiece of focal length 5.0 cm. The magnifying power of the telescope for viewing distant objects when the final image is formed at a distance of 30 cm is

From Brewster’s law, except for polished metallic surfaces, the polarising angle

A source of unknown frequency gives 4 beats/s when sounded with a source of known frequency 250 Hz. The second harmonic of the source of unknown frequency gives five beats per second when sounded with a source of frequency 513 Hz. The unknown frequency is

Choose the incorrect statement.

Out of the following which one is not possible energy for a photon to be emitted by a hydrogen atom according to Bohr’s atomic model?

A cricketer can throw a ball to a maximum horizontal distance of 120 m. How high above the ground can the cricketer throw the same ball?

Two spheres of the same material have radii 1 m and 9 m and temperatures of 5727 °C and 1727 °C respectively. The energy radiated per second by the first sphere is

If the current sensitivity of a galvanometer is doubled by doubling the number of turns, then its voltage sensitivity will be

A wheel with a moment of inertia of 0.65 kg m² and a radius of 0.4 m is rolling on the road without sliding with an angular velocity of 10 rad/s. If the translational kinetic energy of the wheel is 55% total kinetic energy, the mass of the wheel is

The waves that are bent down by the ionosphere are ……… ( Current Electricity Class 12 MCQ NEET )

Assertion: The Laplace correction is based on the fact that the exchange of heat between the region of compression and rarefaction in the air is not possible. Reason: Air is a bad conductor of heat and the velocity of sound in air is high.

Leave a Comment Cancel reply