Category: NEET Physics Objective Questions

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

MCQs on Horizontal Projectile Motion :

1. A stone is just released from the window of a train moving along a horizontal straight track. The stone will hit the ground following
(A) Hyperbolic path
(B) Straight path
(C) Circular path
(D) Parabolic path

Answer

Answer: (D) Parabolic path

2. A bullet is dropped from the same height when another bullet is fired horizontally. They will hit the ground
(A) Simultaneously
(B) Depends on the observer
(C) One after the other
(D) None of the above

Answer

Answer: (B) Simultaneously

3. A bomb is dropped from an aeroplane moving horizontally at a constant speed. When air resistance is taken into consideration, the bomb
(A) Flies with the aeroplane
(B) Falls to earth behind the aeroplane
(C) Falls to earth ahead of the plane
(D) Falls to earth exactly below the aeroplane

Answer

Answer: (B) Falls to earth behind the aeroplane

4. The maximum range of gum on horizontal terrain is 16 km. If g = 10 m/s2. What must be the muzzle velocity of the shell?
(A) 400 m/s
(B) 100 m/s
(C) 200 m/s
(D) 50 m/s

Answer

Answer: (A) 400 m/s

5. An aeroplane flying 490 m above ground level at 100 m/s, releases a block. How far on the ground will it strike?
(A) 2 km
(B) 0.1 km
(C) 1 km
(D) None

Answer

Answer: (C) 1 km

6. A man projects a coin upwards from the gate of a uniformly moving train. The path of coin for the man will be
(A) Vertical straight line
(B) Inclined straight line
(C) Parabolic
(D) Horizontal straight line

Answer

Answer: (A) Vertical straight line

7. A particle A is dropped from a height and another particle B is thrown in a horizontal direction with the speed of 5m/sec from the same height. The correct statement is
(A) Particle B will reach the ground first
(B) Both particles will reach the ground with the same speed
(C) Particle A will reach the ground first
(D) Both particles will reach the ground simultaneously

Answer

Answer: (D) Both particles will reach the ground simultaneously

8. A particle moves in a plane with constant acceleration in a direction from the initial velocity. The path of the particle will be
(A) A parabola
(B) An ellipse
(C) A straight line
(D) An arc of a circle

Answer

Answer: (A) A parabola

9. An aeroplane moving horizontally with a speed of 720 km/h drops a food pocket, while flying a horizontal direction with a speed of 5 m/sec from the same height. The correct statement is
(A) 9 sec and 1800 m
(B) 5 sec and 500 m
(C) 8 sec and 1500 m
(D) 3 sec and 2000 m

Answer

Answer: (A) 9 sec and 1800 m

10. At the height 80 cm, an aeroplane is moving with 150 m/s. A bomb is dropped from it so as to hit a target. At what distance from the target should the bomb be dropped
(A) 600 m
(B) 605.3 m
(C) 80 m
(D) 230 m

Answer

Answer: (B) 605.3 m

NEET  Physics is the very imporatant paper in the Medical Entrance EXAM. Here, you will discover the NEET Physics MCQs with 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 Radio Wave Propagation Multiple Choice Questions

MCQs on Radio Wave Propagation :

1. Mathematical prediction of radio waves was done by
(A) Einstein
(B) Hertz
(C) Faraday
(D) Maxwell

Answer

Answer: (D) Maxwell

2. The electric field and magnetic field of a radio wave are
(A) Perpendicular to each other
(B) Perpendicular to the direction of propagation
(C) Both a and b
(D) None of the above

Answer

Answer: (C) Both a and b

3. The speed of radio wave in free space is
(A) 3 x 10⁶ metres/second
(B) 3 x 10⁸ metres/second
(C) 3 x 10⁶ miles/second
(D) 3 x 10⁸ miles/second

Answer

Answer: (B) 3 x 10⁸ metres/second

4. Radio waves would strongly reflect off
(A) A flat insulating surface of the right size
(B) A flat metallic surface of the right size
(C) A flat dielectric surface of the right size
(D) A flat body of water

Answer

Answer: (B) A flat metallic surface of the right size

5. Radio waves sometimes bend around the corners due to
(A) Reflection
(B) Diffusion
(C) Refraction
(D) Diffraction

Answer

Answer: (D) Diffraction

6. Which of the following is the phenomenon caused when Radio waves travel in two or more paths during propagation and produce slowly-changing phase differences between signals?
(A) Absorption
(B) Fading
(C) Baffling
(D) skip

Answer

Answer: (B) fading

7. High-frequency long-distance propagation mostly depends on
(A) Ionospheric reflection
(B) Tropospheric reflection
(C) Ground reflection
(D) Inverted reflection

Answer

Answer: (A) Ionospheric reflection

8. What is the distance from the far end of the ground wave to the nearest point where the sky wave returns to earth called?
(A) Angle of radiation
(B) maximum usable frequency
(C) Skip distance
(D) Skip zone

Answer

Answer: (D) Skip zone

9. Which of the following are electromagnetic
(A) Radio waves
(B) Light
(C) Gamma waves
(D) All the above

Answer

Answer: (D) All the above

10. The radio waves were demonstrated experimentally by
(A) Hertz
(B) Maxwell
(C) Marconi
(D) Armstrong

Answer

Answer: (A) Hertz

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 Electric Charges And Fields Multiple Choice Questions make you feel confident in answering the question in the

MCQs on Electric Charges And Fields :

1. Pick the correct statement
(A) The glass rod gives protons to silk when they are rubbed against each other.
(B) The glass rod gives electrons to silk when they are rubbed against each other.
(C) The glass rod gains protons from silk when they are rubbed against each other.
(D) The glass rod gains electrons when they are rubbed against each other.

Answer

Answer: (B) The glass rod gives electrons to silk when they are rubbed against each other.

2. A force F acts between two charges +Q and -Q that is placed at a certain distance from each other. The third sphere of charge Q is placed between them. What is the magnitude and force experienced by the third charge?
(A) 3F in the direction of +Q charge
(B) 4F in the direction of +Q charge
(C) 8F in the direction of -Q charge
(D) No direction and magnitude is zero

Answer

Answer: (C) 8F towards -Q charge

3. At the four corners of the square A, B, C and D, Four charges of equal magnitude q are placed. Determine the magnitude of the force acting on the charge at point B?

Answer

Answer: (B) (frac{(1+2 sqrt{2}) q^{2}}{2 times 4 pi epsilon_{0} a^{2}})

4. At a distance r, two equal charges are kept and they exert a force F on each other. What is the force acting on each charge, if the distance between them is doubled and charges are halved?
(A) F/4
(B) 4 F
(C) F/16
(D) F/8

Answer

Answer: (C) F/16

5. Determine the total electric flux of a unit positive charge which is kept in the air?
(A) ϵ₀⁻¹
(B) ϵ₀
(C) 4πϵ₀
(D) 4πϵ₀⁻¹

Answer

Answer: (D) 4πϵ₀⁻¹

6. The variation of electric field E due to a hollow spherical conductor of radius R as a function of distance from the centre of the sphere is shown in which of the following graphs?

Answer

Answer: (B)

7. Pick the correct statement from the following
(A) If the point has a charge then the electric field is discontinuous at the point.
(B) Continous electric field at a point
(C) Continous electric field at a point if a charge is present at the point.
(D) At the point, the electric field is discontinuous if a negative charge is present at the point.

Answer

Answer: (A) If the point has a charge then the electric field is discontinuous at the point.

8. When is Gauss law true?
(A) the speed of light isn’t a universal constant
(B) the inverse square law is false
(C) magnetic monopoles are present
(D) None of the above

Answer

Answer: (B) the inverse square law is false

9. What is the SI unit of permittivity of free space?
(A) Weber
(B) Farad
(C) C²N^-1m^-2
(D) C²N^-1m²

Answer

Answer: (C) C²N^-1m^-2

10. Pick the true statements about electric field lines
(A) It provides information about the direction of the electric field
(B) Electric field lines provide information about the type of charge
(C) Electric field lines provide information about the field strength
(D) All of the above

Answer

Answer: (D) All of the above

11. The electric field lines due to a single negative charge are represented by

Answer

Answer:(B)

12. Which surface is considered for Gauss law?
(A) Spherical surface
(B) Closed Surface
(C) Gaussian Surface
(D) Plane Surface

Answer

Answer: (C) Gaussian Surface

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 knowledge & problem-solving skills along with time management. NEET Physics Electromagnetic Induction and Alternating Currents Multiple Choice Questions

MCQs on Electromagnetic Induction and Alternating Currents :

1. How to increase the energy stored in an inductor by four times?
(A) By doubling the current
(B) This is not possible
(C) By doubling the inductance
(D) By making current √2times

Answer

Answer: (A) By doubling the current

2. Consider an inductor whose linear dimensions are tripled and the total number of turns per unit length is kept constant, what happens to the self-inductance?
(A) 9 times
(B) 3 times
(C) 27 times
(D) (frac{1}{3}) times

Answer

Answer: (B) 3 times

3. Lenz law is based on which of the following conservation
(A) Charge
(B) Mass
(C) Momentum
(D) Energy

Answer

Answer: (D) Energy

4. What will be the acceleration of the falling bar magnet which passes through the ring such that the ring is held horizontally and the bar magnet is dropped along the axis of the ring?
(A) It depends on the diameter of the ring and the length of the magnet
(B) It is equal due to gravity
(C) It is less than due to gravity
(D) It is more than due to gravity

Answer

Answer: (C) It is less than due to gravity

5. An observer is seeing the setup of an aluminium ring B facing an electromagnet A. The current I through A can be altered if

(A) B is independent of an increase or decrease of I
(B) If I increases, A will attract B
(C) If I increase, A will repel B
(D) If I decrease, A will repel B

Answer

Answer: (C) If I increase, A will repel B

6. What is the equivalent inductance of the following circuit if the pure inductance is 3.0H

(A) 9H
(B) 3H
(C) 1H
(D) 2H

Answer

Answer: (C) 1H

7. What is the need for laminating the core of a transformer?
(A) To reduce the resistance in the winding
(B) To reduce the eddy currents
(C) To reduce the hysteresis
(D) None of the above

Answer

Answer: (B) To reduce the eddy currents

8. Which of the following represent the variation of induced EMF with respect to time t if a short bar magnet is moved along its axis and has a constant velocity.

Answer

Answer: (B)

9. A wire loop is rotated in a magnetic field such that the frequency of change of direction of the induced emf is
(A) Six times per revolution
(B) Four times per revolution
(C) Twice per revolution
(D) Once per revolution

Answer

Answer: (C) Twice per revolution

10. Which of the following is the equivalent quantity of mass in electricity?
(A) Current
(B) Charge
(C) Potential
(D) Inductance

Answer

Answer: (D) Inductance

11. What is the unit of inductance?
(A) Volt/ampere
(B) Joule/ampere
(C) Volt-ampere/sec
(D) Volt-sec/ampere

Answer

Answer: (D) Volt-sec/ampere

12. What is the angle made by the plane of eddy currents with the plane of magnetic lines of force?
(A) 0°
(B) 40°
(C) 90°
(D) 180°

Answer

Answer: (C) 90°

NEET  Physics is the very imporatant paper in the Medical Entrance EXAM. So these NEET Physics MCQs with Answers for all Concepts as per the new syllabus. Practice daily with these NEET Physics objective questions on air pollution knowledge & problem-solving skills along with time management. NEET Physics Valve Electronics (Diode and Triode) Multiple Choice Questions make you feel confident in answering the question in the

MCQs on Valve Electronics (Diode and Triode) :

1. Number of secondary electrons emitted per number of primary electrons depends on
(A) Material of target
(B) Frequency of primary electrons
(C) Intensity
(D) None of the above

Answer

Answer: (C) Intensity

2. In a diode, when there is saturation current, the plate resistance is
(A) Zero
(B) Infinite
(C) Some finite quantity
(D) Data is insufficient

Answer

Answer: (B) Infinite

3. The grid voltage of any triode valve is changed from 1 volt to 3 volt and the mutual conductance is 3 x 10^-4 mho. The change in plate circuit current will be
(A) 0.8 mA
(B) 0.6 mA
(C) 0.4 mA
(D) 1 mA

Answer

Answer: (B) 0.6 mA

4. For a given plate voltage the plate current in a triode is maximum when the potential of
(A) The grid is positive and the plate is negative
(B) The grid is positive and the plate is positive
(C) The grid is zero and the plate is positive
(D) The grid is negative and the plate is positive

Answer

Answer: (B) The grid is positive and the plate is positive

5. The amplification factor of a triode is 20. If the grid potential is reduced by 0.2 volt then to keep the plate current constant its plate voltage is to be increased by
(A) 10 volt
(B) 4 volt
(C) 40 volt
(D) 100 volt

Answer

Answer: (B) 4 volt

6. The amplification produced by a triode is due to the action of
(A) Filament
(B) Cathode
(C) Grid
(D) plate

Answer

Answer: (C) Grid

7. In a triode amplifier, the value of maximum gain is equal to
(A) Half the amplification factor
(B) Amplification factor
(C) Twice the amplification factor
(D) Infinity

Answer

Answer: (B) Amplification factor

8. The voltage gain by the triode depends on
(A) Filament voltage
(B) Plate voltage
(C) Plate resistance
(D) Plate current

Answer

Answer: (C) Plate resistance

9. In a triode valve
(A) If the grid voltage is zero then plate current will be zero
(B) If the temperature of the filament is doubled, then the thermionic current will also be doubled.
(C) If the temperature of the filament is doubled, then the thermionic current will nearly be four times
(D) At a definite grid voltage, the plate current varies with plate voltage according to Ohm’s law

Answer

Answer: (C) If the temperature of the filament is doubled, then the thermionic current will nearly be four times

10. In the circuit of a triode valve, there is no change in the plate current, when the plate potential is increased from 200 volt to 220 volt and the grid potential is decreased from 0.5 volt to 1.3 volt. The amplification factor of the valve is
(A) 15
(B) 20
(C) 25
(D) 35

Answer

Answer: (C) 25

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

MCQs on Non-uniform Circular Motion :

1. A bottle of soap water is grasped by the neck and swings briskly in a vertical circle. Near which portion of the bottle do the bubbles collect
(A) Near the bottom
(B) In the middle of the bottle
(C) Near the neck
(D) Uniformly distributed in the bottle

Answer

Answer: (C) Near the neck

2. A bucket tied at the end of a 1.6 m long spring is whirled in a vertical circle with constant speed. What should be the minimum speed so that the water from the bucket does not spill when the bucket is at the highest position?
(A) 4 m/sec
(B) 6.25 m/sec
(C) 16 m/sec
(D) None of the above

Answer

Answer: (A) 4 m/sec

3. A1 Kg stone at the end of 1 m long string is whirled in a vertical circle at a constant speed of 4 m/sec. The tension in the string is 6 N, when the stone is at
(A) Top of the circle
(B) Bottom of the circle
(C) Halfway down
(D) None of the above

Answer

Answer: (A) Top of the circle

4. A cane filled with water is revolved in a vertical circle of radius 4 metres and the water just does not fall down. The time period of revolution will be
(A) 1 sec
(B) 10 sec
(C) 8 sec
(D) 4 sec

Answer

Answer: (D) 4 sec

5. A 2 Kg stone at the end of a string 1 m long is whirled in a vertical circle at a constant speed. The speed of the stone is 4 m/sec. The tension in the string will be 52N, when the stone is
(A) At the top of the circle
(B) At the bottom of the circle
(C) Halfway down
(D) None of these

Answer

Answer: (B)At the bottom of the circle

6. The string of pendulum of length l is displaced through 90⁰ from the vertical and released. Then the minimum strength of the string in order to withstand the tension, as the pendulum passes through the mean position is
(A) mg
(B) 3 mg
(C) 5 mg
(D) 6 mg

Answer

Answer: (B) 3 mg

7. In a vertical circle of radius r, at what point in its path does a particle have tension equal to zero, if it is just able to complete the vertical circle
(A) Highest point
(B) Lowest point
(C) Any point
(D) At a point horizontally from the centre of the circle of radius r

Answer

Answer: (A) Highest point

8. A hollow sphere has a radius of 6.4 m. Minimum velocity required by a motorcyclist at the bottom to complete the circle will be
(A) 17.7 m/s
(B) 10.2 m/s
(C) 12.4 m/s
(D) 16.0 m/s

Answer

Answer: (A) 17.7 m/s

9. A fan is making 600 revolutions per minute. If after some time it makes 1200 revolutions per minute, then increase in its angular velocity
(A) 10 π rad /sec
(B) 20 π rad /sec
(C) 40 π rad /sec
(D) 60 π rad /sec

Answer

Answer: (B) 20 π rad /sec

10. A stone tied with a string, is rotated in a vertical circle. The minimum speed with which the string has to be rotated
(A) Is independent of the mass of the stone
(B) Is independent of the length of the stone
(C) Decreases with increasing mass of the stone
(D) Decreases with increasing length of the stone

Answer

Answer: (A) Is independent of the mass of the stone