NEET Free Mock Test MCQs for Class 12 Physics – Set 01

Are you preparing for the NEET-UG exam and looking for thorough physics preparation for class 12? There’s nowhere else to look! We offer a collection of painstakingly created Multiple Choice Questions (MCQs) designed especially to help you prepare for the NEET. This sample test is intended to evaluate and improve your comprehension of magnetism, electromagnetic induction (EMI), alternating current (AC), electromagnetic waves, and ray optics. It covers key topics from the NCERT syllabus.

Please note that the The symbols used have their conventional meanings. ‘^’ indicates raised to the power. The answers are provided at the end of the article. All the questions are crafted based on the standard NCERT syllabus and hold significance for the NEET-UG examination. Additional hints are included where necessary. This mock test serves as a preparatory tool, so ensure thorough revision before attempting the questions.

Subject Covered: Magnetism, Electromagnetic Induction (EMI), Alternating Current (AC), Electromagnetic Waves, and Ray Optics.

With our all-inclusive NEET Mock MCQs Test 01, start your path to NEET success. In addition to assessing your conceptual clarity, these questions provide insightful information on test trends and question types. This mock test is a great tool for your NEET preparation, whether you’re brushing up on important ideas or honing your problem-solving techniques. Let’s explore the fascinating field of physics and hone our knowledge in preparation for the impending test.

NEET Mock MCQs Test 01

1. If a current-carrying loop, depicted in the figure below, experiences a force F=F0 k (where F0 is a positive constant, and the force is in the Z-plane), then the nature of the magnetic field should be:

A) Uniform parallel to the x-y plane B) Uniform along the positive z-direction C) Uniform along the negative z-direction D) Radially outward and symmetric

2. In a cyclotron, dees are perforated to allow the stream of particles to move in a spiral path before emerging from the deflector. Thus, the angular momentum of an accelerating charge depends on the radius r as:

A) r^2 B) r^-1 C) r^0 D) r

3. In the diagram provided, a current-carrying conductor is subjected to a steady uniform magnetic field. Then, on the conductor:

A) Torque τ = 0, Force F = 0 B) Torque τ ≠ 0, Force F ≠ 0 C) Torque = 0, Force F ≠ 0 D) Torque ≠ 0, Force F = 0

4. The magnetic dipole moment of the current loop as shown in the given figure below is:

A) -IL^2 j – IπL^2/8 i B) IL^2 j + IπL^2/8 i C) -IL^2 j + IπL^2/8 i D) -IL^2 j + IπL^2/4 i

5. Electric field and magnetic field in a region of space are given by E = E0 j and B = B0 j. If a charged particle is released at the origin with velocity v = v0 k, then the path of the particle is:

A) Straight line B) Helical with uniform pitch C) Circular path D) Helical with increasing pitch

6. A circular flexible current loop of radius R carrying current i is placed in an inward magnetic field B. If we spin the loop with angular speed ω, then the tension trying (Assuming the mass of the loop is m) is:

A) Zero B) More than iBR C) Less than iBR D) Does not depend on rotation

7. A closed loop carrying current i is placed so that its plane is perpendicular to the long current-carrying straight conductor as shown in the given figure. The net force acting on the loop is [where WZ and XY are circular arcs]:

A) Zero B) [μ0i i0 (b-a)]/2π√ab C) [μ0i i0 (b-a)]/π(a+b) D) [μ0i i0 (b -a)]/2π(a+b)

8. A conducting wire MN moves with velocity v0 along the +x-axis in a uniform magnetic field B = -B0 k as shown in the given figure below. Then:

A) End N is positive and end M is negative B) End M is positive and end N is negative C) The emf induced along the rod does not depend on its shape, whether it is curved or straight D) Both (1) and (3) are correct

9. A conducting rod PQ is rotated in a magnetic field B about an axis passing through point O as shown in the figure. Then the potential difference between P & Q is (ω : angular speed):

A) Bω (b^2 – a^2) B) Bωb^2/2 C) Bωa^2/2 D) Bω * (b^2 – a^2)

10. A bar magnet has a coercivity of 4000 A m^-1. It is desired to demagnetize by inserting it inside a solenoid 10 cm long and having 500 turns. The current which should be carried by the solenoid is (consider an ideal solenoid):

A) 0.8 μ0 A B) 0.4 μ0 A C) 0.8 A D) 0.8/μ0 A

11. A short bar magnet of magnetic moment 1.5 A m^2 is placed along the x-axis at the origin. If the magnetic field along the line joining the origin to point P (2√3,2,0) m is √n * 10^-7/128 T, then n should be:

A) 3 B) 27 C) 9 D) 16

12. A square loop of side 10 cm with its sides parallel to the x and y axes is kept in a uniform magnetic field pointing towards the positive z-direction. If the magnetic field changes at the rate of 0.1 T/s, then the induced emf is:

A) 1.0 mV B) 0.5 mV C) 1.5 mV D) 0.3 mV

13. A coil in the shape of a square is placed in a variable magnetic field, which varies at the rate of dB/dt as shown in the figure. The magnitude of emf between points a and d along the path abcd will be:

A) L^2/2 * dB/dt B) L^2 * dB/dt C) 2L^2 * dB/dt D) 3L^2/2 * dB/dt

14. The network shown in the figure below is a part of a complete circuit. If at a certain instant, the current i = 1 A and the potentials at points A and B are equal, then the value of |di/dt| is:

A) 400 A/s B) 300 A/s C) 800 A/s D) 200 A/s

15. The time constant for an L-R circuit between the terminals a and b as shown in the diagram is:

A) 4L/R B) L/R C) L/4R D) 2L/R

16. A capacitor C and inductor L are connected in parallel with a battery of emf e and internal resistance r. At time t = 0, the current through the cell is i0 and at t = ∞, let the current be i. Then i0/i is equal to:

A) 1 B) Zero C) Infinite D) Cannot be determined

17. If a source is connected across an ideal capacitor and the current passing through it is denoted by curve (a), then the instantaneous power is denoted by curve:

A) c B) b C) e D) d

18. A series R-L circuit is subjected to an alternating voltage given as v = v0 sinωt . Then the variation of peak current (i) with frequency (ν) is denoted by:

A)

19. The dimensional formula of ε0dΦE/dt is (where ΦE is electric flux and ε0 is the permittivity of air):

A) [M^-1L^3T^-2A^-1] B) [M^-1L^2T^0A^-1] C) [M^0L^0T^0A] D) [M^0LT^0A^-1]

20. The resonant frequency of an L-C circuit is f before the insertion of a dielectric of (dielectric constant) . After inserting the dielectric, the resonant frequency will be:

A) f0/2 B) 4f0 C) 2f0 D) f0

21. If the input A contains both AC and DC, and the output C gets only AC components, then the device B is:

A) Capacitor B) Inductor C) Resistor D) Both resistor and capacitor in series

22. The average value of current in the i-t graph of the semicircular part is:

A) 4/π B) π/√2 C) π/6 D) π/2

23. Two 1000-watt hair dryers are connected parallel to a 200-volt peak (sinusoidal) A.C. supply. The total R.M.S current drawn from the supply should be:

A) 10√2 A B) 5√2 A C) 5 A D) 10 A

24. In the propagation of electromagnetic waves, which of the following statements is correct?

A) The rate of flow of energy crossing a unit perpendicular area is described by the Poynting vector ‘s’ B) Poynting vector, s = E x B C) Electromagnetic waves cannot exert pressure on a surface due to the absence of momentum D) Pressure exerted by electromagnetic waves on a perfectly absorbing surface P = 2s/c, where s is the Poynting vector

25. In an electric circuit, there is a capacitor of reactance 100 Ω, connected across the source of 300 volts. The displacement current will be:

A) 3 A B) 1.5 A C) 2.2 A D) 3

Answers:

1. D, 2) A, 3) B, 4) A, 5) D, 6) B, 7) A, 8) D, 9) D, 10) C,
2. B, 12) A, 13) D, 14) A, 15) A, 16) A, 17) A, 18) B, 19) C, 20) A,
3. A, 22) D, 23) A, 24) A, 25) A