300+ REAL TIME NEET Physics Objective Questions & Answers 2023

300+ TOP MCQs on Biot Savart Law and Answers

NEET Physics is the very imporatant paper in the Medical Entrance EXAM. Here, you will discover the NEET Physics MCQs and Answers for all Concepts as per the new syllabus. Practice daily with these NEET Physics objective questions on air pollution . NEET Physics Biot Savart Law Multiple Choice Questions make you feel confident in answering the question in the

MCQs on Biot Savart Law :

1. Which is the equation of the magnetic field according to Biot-Savart’s law?
(A) IdIsinθ/r²
(B) (μ₀/4π)IdIsinθ/r
(C) (μ₀/4π)IdIsinθ/r²
(D) (μ₀/4π)IdIsinθ

Answer

Answer: (C) (μ₀/4π)IdIsinθ/r²

2. The magnetic field due to a copper rod carrying direct current is
(A) The magnetic field is inside the rod
(B) The magnetic field is outside the rod
(C) Both inside and outside the rod
(D) Neither inside nor outside

Answer

Answer: (C) Both inside and outside the rod

3. Consider a current i flowing through the inner conductor of a coaxial cable and the current returns along the outer conductor of the cable. The value of magnetic induction at a distance r from the axis is
(A) (μ₀/4π)(2i/r)
(B) ∞
(C) Zero
(D) (μ₀/4π)(2πi/r)

Answer

Answer: (C) Zero

4. To which law of electricity is Biot Savart law of magnetism analogous to
(A) Coulomb’s law
(B) Ohm’s law
(C) Kirchoff’s law
(D) Faraday’s law

Answer

Answer: (A) Coulomb’s law

5. Which of the following properties cannot be calculated from Biot Savart law?
(A) Magnetic field intensity
(B) Flux density
(C) Permeability
(D) Electric field intensity

Answer

Answer: (D) Electric field intensity

6. Consider a circular conductor with 2m radius and 8 A current flowing through it. What is the value of magnetic field intensity at the centre of the circular conductor?
(A) 4π x 10^-7 T
(B) 8π x 10^-7 T
(C) 8 x 10^-7 T
(D) 3π x 10⁷ T

Answer

Answer: (B) 8π x 10^-7 T

7. If the strength of the magnetic field at a point r near a long straight current-carrying wire is B. The value of the field at a distance r/2 will be
(A) B/2
(B) B/4
(C) 2B
(D) 4B

Answer

Answer: (C) 2B

8. If the current I flows through the coil of radius r then the field at the centre of the circular coil is
(A) Inversely proportional to I²
(B) Directly proportional to I
(C) Directly proportional to r
(D) Inversely proportional to r²

Answer

Answer: (B) Directly proportional to I

9. Two parallel conductors separated by a distance 2r carries current i in the same direction. The intensity of the magnetic field midway between them is
(A) Zero
(B) μ₀ i/r
(C) 4μ₀ i/r
(D) μ₀ i/4r

Answer

Answer: (A) Zero

10. A straight wire of length 2 metres is taken and a current of 1 Ampere is passed through them. The magnetic field at a point along the axis of the wire at a distance of 3 metres from either end of the wire is given by
(A) μ₀ /4π
(B) Zero
(C) μ₀ /π
(D) 2μ₀ /π

Answer

Answer: (A) Zero

300+ TOP MCQs on Atoms and Nuclei and Answers

NEET Physics is the very imporatant paper in the Medical Entrance EXAM. Here, you will discover the NEET Physics MCQs and Answers for all Concepts as per the new syllabus. Practice daily with these NEET Physics objective questions on air pollution . NEET Physics Atoms and Nuclei Multiple Choice Questions make you feel confident in answering the question in the

MCQs on Atoms and Nuclei :

1. Which of the following should we consider to explain the fine structure of the spectrum of hydrogen?
(A) The presence of neutrons in the nucleus
(B) Orbital Angular Momentum
(C) Infinite size of the nucleus
(D) Spin angular Momentum

Answer

Answer: (D) Spin Angular Momentum

2. Which of the following statements is true about Bohr’s atomic model?
(A) The electron can only move in particular orbits only
(B) An electron radiates energy only when it jumps to another orbit
(C) An atom consists of a positively charged nucleus
(D) All of the above

Answer

Answer: (D) All of the above

3. If the radius of Bohr’s first orbit is a₀, what is the radius of the nth orbit?
(A) na₀
(B) a₀/n
(C) n²a₀
(D) a₀/n²

Answer

Answer: (C) n²a₀

4. Of the various series of the hydrogen spectrum, which of the following lies wholly in the ultraviolet region?
(A) Balmer Series
(B) Paschen Series
(C) Brackett series
(D) Lyman Series

Answer

Answer: (D) Lyman Series

5. In Bohr’s model, if the radius of the first orbit is r₀, what is the radius of the third orbit?
(A) 3r₀
(B) 9r₀
(C) r₀/9
(D) r₀

Answer

Answer: (B) 9r₀

6. What is the energy needed to ionize H-atom from its second excited state if the energy of the ground state of H-atom is 13.6 eV?
(A) 3.4 eV
(B) 1.51 eV
(C) 12.1 eV
(D) 13.6 eV

Answer

Answer: (B) 1.51 eV

7. Which of the following regions does X-ray lie between?
(A) visible and ultraviolet regions
(B) short radio waves and long radio waves
(C) short radio waves and visible region
(D) gamma rays and ultraviolet region

Answer

Answer: (D) gamma rays and ultraviolet region

8. Which of the following is a correct statement?
(A) Equal fractions disintegrate in equal intervals of time.
(B) The rate of disintegration is directly proportional to the number of atoms present in the sample at that instant.
(C) A radioactive sample takes an infinite time to disintegrate completely
(D) All of the above

Answer

Answer: (D) All of the above

9. Which of the following is true about gamma rays?
(A) Gamma rays are uncharged high energy rays coming from the outer space
(B) Gamma rays are high energy rays emitted by radioactive elements
(C) Gamma rays are charged particles emitted by radioactive elements
(D) Gamma rays are charged high energy rays coming from the outer space

Answer

Answer: (B) Gamma rays are high energy rays emitted by radioactive elements

10. How many numbers of spectral lines are observed when hydrogen atoms are excited from ground state to the state of principal quantum number 4?
(A) 2
(B) 3
(C) 5
(D) 6

Answer

Answer: (D) 6

300+ TOP MCQs on Kinematics and Answers Pdf Download

NEET Physics is the very imporatant paper in the Medical Entrance EXAM. So these NEET Physics MCQs and Answers for all Concepts as per the new syllabus. Practice daily with these NEET Physics objective questions on air pollution . NEET Physics Kinematics Multiple Choice Questions

MCQs on Kinematics :

1. What will be the shape of the x→y graph, if the relation between time and displacement of the moving body is t = 2αx² where α is constant.

(A) Circle
(B) Straight line
(C) Parabola
(D) Hyperbola

2. Which of the following statement is true if a body moves in a semicircular track whose radius is R

(A) 2R is the displacement of the body
(B) πR is the distance travelled by the body
(C) Both (A) and (B) are correct
(D) None of the above

3. What does the area under acceleration-time graph represent for any given time interval

(A) Final velocity
(B) Distance travelled
(C) Change in the velocity in that time interval
(D) Displacement of the particle

4. When can we say that the resultant of the two vectors is maximum

(A) When the vectors are acting in the opposite direction
(B) Both the vectors are acting in the same direction
(C) When the vectors are at right angles
(D) When the vectors are parallel to each other

Frequently Asked Question (FAQs)

1. What are the five significant kinematic quantities?

The five significant kinematic quantities are displacement (x-x0), time (t), initial velocity (v0), final velocity (v), and constant acceleration (a). These quantities are commonly included when describing the position and motion of an object.

2. Are kinematics tough?

This is not a challenging chapter, though some of the concepts, especially differentiation, integration, and vectors. Relative motion and acceleration of a particle in uniform circular motion would feel new.

3. Can velocity be negative?

An object which moves in the negative direction has a negative velocity. If the object slows down, its acceleration vector is directed in the opposite direction as its motion (in this case, a positive acceleration).

4. What are kinematics examples?

Examples of kinematics

The movement of a vehicle in a straight line (constant velocity motion)
A person skydiving (Free fall)
An apple that falls from a tree (free-fall)
A rocket flying towards space (vertical motion)
A plane flying (uniform accelerated motion)
A three-shot point in basketball (projectile motion)

5. What are the four equations of motion?

They are often referred to as the SUVAT equations, where “SUVAT” is an acronym from the variables: s = displacement, u = initial velocity, v = final velocity, a = acceleration, and t = time.

6. Is kinematics important for JEE?

It is one of the essential chapters in the Physics syllabus of JEE Main and JEE Advanced. About 2-3 questions are always asked from this chapter in the exam.

300+ TOP MCQs on Viscosity and Answers

MCQs on Viscosity :

1. Which of the following represents viscosity?
(A) Potential energy stored in fluid
(B) Resistance to fluid motion
(C) Roughness of the surface
(D) The pressure difference between the two fluids

Answer

Answer: (B) Resistance to fluid motion

2. What is the SI unit of viscosity?
(A) Candela
(B) Poiseiulle
(C) Newton/m
(D) No units

Answer

Answer: (B) Poiseiulle

3. Which of these fluids has the highest viscosity?
(A) Water
(B) Honey
(C) Blood
(D) Air

Answer

Answer: (B)Honey

4. What happens to the viscosity of liquid with the increase in temperature
(A) It increases
(B) It decreases
(C) It may increase or decrease
(D) No change

Answer

Answer: (B) It decreases

5. What do we call the maximum velocity of a fluid in a tube for which the flow remains streamlined?
(A) Hyper velocity
(B) critical velocity
(C) Stream velocity
(D) Laminar velocity

Answer

Answer: (B) critical velocity

6. Which of the following represents Kinematic viscosity?
(A) Viscosity/temperature
(B) Viscosity/area
(C) Viscosity/density
(D) Viscosity/mass

Answer

Answer: (C) Viscosity/density

7. Which of these ratios gives the value of viscosity of fluid?
(A) Ratio of the shearing stress to the weight of the fluid
(B) Ratio of the shearing stress to the density of the fluid
(C) Ratio of the velocity gradient and shearing stress
(D) The ratio of the shearing stress to the velocity gradient

Answer

Answer: (D) The ratio of the shearing stress to the velocity gradient

8. The relative motion between the adjacent layers of a fluid in motion is called viscous force. Which of the flowing suits the best in the sentence?
(A) Effects at some conditions
(B) Never affects
(C) Opposes
(D) Facilitates

Answer

Answer: (C) Opposes

9. Which among the following statement is the definition of a pseudoplastic liquid?
(A) It is a liquid that becomes less viscous over time when constant shear stress is applied
(B) As the rate of shear increases, it becomes less viscous
(C) When constant shear stress is applied the liquid becomes more viscous over time
(D) A liquid which becomes more viscous as the rate of shear increases

Answer

Answer: (B)It is a liquid that becomes less viscous as the rate of shear increases

10. Which is the following is the correct definition of solubility?
(A) The rate at which a solute dissolves into a solvent
(B) The ability of a solid particle to disperse throughout a liquid continuous phase
(C) The rate at which the immiscible liquid droplets disperse within a second in the liquid phase
(D) The ability of a solute to dissolve into a solvent

Answer

Answer: (D) The ability of a solute to dissolve into a solvent

300+ TOP MCQs on Transistor and Answers

MCQs on Transistor :

1. The base of a transistor is …………. doped
(A) Moderately
(B) Lightly
(C) Heavily
(D) None of the above

Answer

Answer: (B) Lightly

2. How many depletion layers are there in a transistor
(A) Four
(B) One
(C) Two
(D) Three

Answer

Answer: (C) Two

3. A transistor has
(A) Two p-n junctions
(B) One p-n junction
(C) Three p-n junctions
(D) Four p-n junctions

Answer

Answer: (A) Two p-n junctions

4. The current carries in a PNP transistor is
(A) Free electrons
(B) Acceptor ions
(C) Donor ions
(D) Holes

Answer

Answer: (D) Holes

5. The base-emitter junctions of a transistor is
(A) a wide depletion layer
(B) Low resistance
(C) a reverse bias
(D) None

Answer

Answer: (B) Low resistance

6. In a transistor the input impedance is
(A) Low
(B) Very high
(C) Almost zero
(D) High

Answer

Answer: (A) Low

7. The majority of the carriers from the emitter
(A) Recombine in the emitter
(B) Pass through the base of the collector
(C) Recombine in the base
(D) None of the above

Answer

Answer: (B) Pass through the base of the collector

8. The value of α of a transistor is
(A) More than 1
(B) Less than 1
(C) 1
(D) None of the above

Answer

Answer: (B) Less than 1

9. The output impedance of a transistor is
(A) High
(B) Zero
(C) Low
(D) Very low

Answer

Answer: (A) High

10. As the temperature of a transistor goes up, the base-emitter resistance
(A) Decreases
(B) Increases
(C) Remains the same
(D) None of the above

Answer

Answer: (A) Decreases

300+ TOP MCQs on Elastic and Inelastic Collision and Answers

NEET Physics is the very imporatant paper in the Medical Entrance EXAM. So these NEET Physics MCQs and Answers for all Concepts as per the new syllabus. Practice more on a regular basis with these NEET Physics objective questions on air pollution . NEET Physics Elastic and Inelastic Collision Multiple Choice Questions

MCQs on Elastic and Inelastic Collision :

1. The principle of conservation of linear momentum can be strictly applied during a collision between two particles provided the time of impact is
(A) Moderately small
(B) Extremely large
(C) Extremely small
(D) Depends on a particular case

Answer

Answer: (B) Extremely small

2. In an elastic collision of two particles the following is conserved
(A) Speed of each particle
(B) Kinetic energy of each particle
(C) Total kinetic energy of both the particles
(D) Momentum of each particle

Answer

Answer: (C) Total kinetic energy of both the particles

3. A shell initially at rest explodes into two pieces of equal mass, then the two pieces will
(A) Move with different velocities in different directions
(B) Be at rest
(C) Move with the same velocity in the same direction
(D) Move with the same velocity in opposite directions

Answer

Answer: (D) Move with the same velocity in opposite directions

4. A lead ball strikes a wall and falls down, a tennis ball having the same mass and velocity strikes the wall and bounces back. Check the correct statement.
(A) The lead ball suffers a greater change in momentum compared with the tennis ball
(B) The tennis ball suffers a greater change in momentum as compared with the lead ball
(C) The momentum of the lead ball is greater than that of the tennis ball
(D) Both suffer an equal change in momentum

Answer

Answer: (B) The tennis ball suffers a greater change in momentum as compared with the lead ball

5. When two bodies collide elastically, then
(A) Kinetic energy of the system alone is conserved
(B) Only momentum is conserved
(C) Both energy and momentum are conserved
(D) Neither energy nor momentum is conserved

Answer

Answer: (C) Both energy and momentum are conserved

6. The coefficient of restitution for a perfectly elastic collision is
(A) 1
(B) 0
(C) ∞
(D) -1

Answer

Answer: (A) 1

7. Two balls at same temperature collide. What is conserved?
(A) Temperature
(B) Kinetic energy
(C) Momentum
(D) Velocity

Answer

Answer: (C) Momentum

8. A body of mass M collides against a wall with a velocity V and retraces its path with the same speed. The change in momentum is (take the initial direction of the velocity as positive)
(A) 2 Mv
(B) 1 Mv
(C) -2 Mv
(D) Zero

Answer

Answer: (C) -2 Mv

9. A shell of mass m moving with velocity v suddenly breaks into 2 pieces. The part having mass m/4 remains stationary. The velocity of the shell will be
(A) (4/3)v
(B) V
(C) 2 v
(D) ¾ v

Answer

Answer: (A) (4/3)v

10. A metal ball falls from a height of 32 metres on a steel plate. If the coefficient of restriction is 0.5 to what height will the ball rise after the second bounce
(A) 4 m
(B) 8 m
(C) 2 m
(D) 16 m

Answer

Answer: (C) 2 m