Physics is one of the most important subject in Indian Airforce Agniveer exam 2023, where candidates have to score a good marks to qualify the test. In this section of Physics, it includes variety of basic to moderate level of questions from several chapters of class 9th to 12th. Indian Airforce Agniveer asks 25 questions from Physics in its paper for Group X (Only Science) and Group X+Y (Science+Non-Science).

In order to help you to score full marks in this section, we have compiled some selected questions of Physics from chapters like Motion, Gravitation, Electromagnetism, Atoms & Nuclei, Physical World & Measurement, Optics etc. So, you should go through this post and test yourself and strengthen your preparation.

**Physics Questions for Indian Airforce Agniveer**

**Question 01: ‘Mho’ is the unit of **

- (a) Electrical conductivity
- (b) Current
- (c) Resistance
- (d) Resistivity

**Question 02: The velocity of a particle is represented in this way v = a + bt + ct ^{2}. If the velocity is measured in m/s, then the units of ‘a’ and ‘c’ are **

- (a) m/s and m/s
^{2} - (b) m/s
^{2}and m/s^{3} - (c) m
^{2}/s and m/s^{2} - (d) m/s and m/s

**Question 03: In this equation p = At + Bt ^{2}, p and t represent the force and time. A and B will have dimension**

- (a) [MLT
^{3}], [MLT^{-4}] - (b) [MLT
^{2}], [MLT^{-4}] - (c) [ML
^{-1}T^{-2}], [MLT^{-3}] - (d) None of these

**Question 04: Newton × meter is unit of **

- (a) Torque
- (b) Moment of Inertia
- (c) Force
- (d) Power

**Question 05: A person travels along a straight road for half the distance with velocity v _{1} and the remaining half distance with velocity with v_{2} then the average velocity is given by**

- (a) v
_{1}v_{2} - (b) (v
_{2})^{2}/(v_{1})^{2} - (c) (2v
_{1}v_{2})/(v_{1}+v_{2}) - (d) (v
_{1}+v_{2})/2

**Question 06: The displacement-time graph for two particles A and B are straight lines inclined at angles of 30 ^{o} and 60^{o} with the time axis. the ratio of velocities of V_{A}:V_{B} is**

- (a) 1 : 2
- (b) 1 : 13
- (c) 13 : 1
- (d) 1 : 3

**Question 07: One car moving on a straight road covers one third of the distance with 20 km/hr and the rest with 60 km/hr. the average speed is **

- (a) 40 km/hr
- (b) 80 km/hr
- (c) 46 km/hr
- (d) 36 km/hr

**Question 08: The correct statement from the following is**

- (a) A body having zero velocity will not necessarily have zero acceleration
- (b) A body having zero velocity will necessarily have zero acceleration
- (c) A body having uniform speed can have only uniform acceleration
- (d) A body having non-uniform velocity will have zero acceleration

**Question 09: The initial velocity of a body moving along a straight line is 7 m/s. it has a uniform acceleration of 4 m/s ^{2.} The distance covered by the body in the 5^{th} second of its motions will be**

- (a) 25 m
- (b) 35 m
- (c) 50 m
- (d) 85 m

**Question 10: If a train travelling at 72 kmph is to be brought to rest in a distance of 200 m, then its retardation should be**

- (a) 20 m/s
^{-1} - (b) 10 m/s
^{-1} - (c) 1 m/s
^{-1} - (d) None

**Question 11: A particle of mass is executing uniform circular motion on a path of radius r. If p is the magnitude of its linear momentum. The radial force acting on the particle is**

- (a) pmr
- (b) rm/p
- (c) mp
^{2}/r - (d) p
^{2}/rm

**Question 12: Radius of the curved road on national highway is ‘R’. Width of the road is ‘b’. The outer edge of the road is raised by with respect to inner edge so that car with velocity ‘v’ can pass safe over it. The value of ‘h’ is**

- (a) v
^{2}b/Rg - (b) v/Rgb
- (c) v
^{2}b/R - (d) v
^{2}b/g

**Question 13: The magnitude of the centripetal force acting on a body of mass ‘m’ executing uniform motion in a circle of radius ‘r’ with speed ‘v’ is**

- (a) mvr
- (b) mv
^{2}/r - (c) v/r
^{2}m - (d) v/rm

**Question 14: A string breaks if its tension exceeds 10 newtons. A stone of mass 250gm tied to this string of length 10 cm is rotated in horizontal circle. The maximum angular velocity of rotation can be**

- (a) 20 rad/s
- (b) 40 rad/s
- (c) 100 rad/s
- (d) 200 rad/s

**Question 15: A particle of mass ‘M’ moves with constant speed along a circular path of radius ‘r’ under the action of a force ‘F’. Its speed is**

- (a) √(rF/m)
- (b) √(F/r)
- (c) √(F/mr)
- (d) √(Fmr)

**Question 16: In uniform circular motion**

- (a) Both the angular velocity and the angular momentum vary
- (b) The angular velocity varies but the angular momentum remains constant
- (c) Both the angular velocity and the angular momentum stay constant
- (d) The angular momentum varies but the angular velocity remains constant

**Question 17: A car is moving with speed 30 m/s on a circular path of radius 500 m. Its speed is increasing at the rate of 2 m/s. What is the acceleration of the car?**

- (a) 2 m/s
^{2} - (b) 2.7 m/s
^{2} - (c) 1.8 m/s
^{2} - (d) 9.8 m/s
^{2}

**Question 18: A particle moves in a plane with constant acceleration in a direction different from the initial velocity. The path of the particle will be**

- (a) A straight line
- (b) An arc of a circle
- (c) A parabola
- (d) An ellipse

**Question 19: An object is thrown along a direction inclined at angle of 45 ^{o} with the horizontal direction. the horizontal range of the particle is equal to **

- (a) Vertical Height
- (b) Twice the vertical height
- (c) Thrice the vertical height
- (d) Four times the vertical height

**Question 20: The horizontal range is four times the maximum height attained by a projectile. The angle of projection is**

- (a) 90
^{o} - (b) 60
^{o} - (c) 45
^{o} - (d) 30
^{o}

**Question 21: When a body is thrown with a velocity ‘u’ making an angle ‘θ’ with the horizontal plane, the maximum distance covered by it in**

- (a) (u
^{2}Sinθ)/g - (b) (u
^{2}Sinθ)/2g - (c) (u
^{2}Sin2θ)/g - (d) (u
^{2}Cos2θ)/g

**Question 22: A ball is projected with velocity V _{o} at an angle of elevation 30^{o}. Mark the correct statement**

- (a) Kinetic energy will be zero at the highest point of the trajectory
- (b) Vertical component of momentum will be conserved
- (c) Horizontal component of momentum will be conserved
- (d) Gravitational potential energy will be minimum at the highest point of the trajectory

**Question 23: A rider on horse back falls when horse starts running all of sudden because**

- (a) Rider is taken back
- (b) Rider is suddenly afraid of falling
- (c) Inertia of rest keeps the upper part of the body at rest whereas lower part of the body moves forward with the horse
- (d) None of the above

**Question 24: When a train stops suddenly, passengers in the running train feel an instant jerk in the forward direction because**

- (a) The back of seat suddenly pushes the passengers forwarding
- (b) Inertia of rest stops the train and takes the body forward
- (c) Upper part of the body continues to be in the state of motion whereas the lower part of the body in contact with seat remains at rest
- (d) Nothing can be said due to insufficient data set Newton’s first law of motion

**Question 25: Newton’s first law of motion describes the following**

- (a) Energy
- (b) Work
- (c) Inertia
- (d) Moment of inertia

**Question 26: A man is standing on a weighing machine placed in a lift. When stationary his weight is recorded as 40 kg. of the lift is accelerate upwards with an acceleration 2 m/s ^{2}, then the weight recorded in the machine will be (g=10 m/s^{2})**

- (a) 32 kg
- (b) 40 kg
- (c) 42 kg
- (d) 48 kg

**Question 27: When a body is moving on a surface, the force of friction is called**

- (a) Static friction
- (b) Dynamic friction
- (c) Limiting friction
- (d) Rolling friction

**Question 28: A car having a mass of 1000 kg is moving at a speed of 30 m/s. Brakes are applied to bring the car to rest. It the frictional forces between the tyres and the road surface is 5000 newtons, the car will come to rest in**

- (a) 5 sec
- (b) 10 sec
- (c) 12 sec
- (d) 6 sec

**Question 29: You lift a heavy book from the floor of the room and keep it in the book shelf having a height 2 m. In this process you take 5 seconds. The work done by you will depend upon**

- (a) Mass of the book and time taken
- (b) Weight of the book and height of the book shelf
- (c) Height of the book-shelf and time taken
- (d) Mass of the book, height of the book-shelf and time taken

**Question 30: A body of mass ‘m’ kg is lifted by a man to a height of 1 m in 30 sec. Another man lifts the same mass to the same height in 60 sec. The word done by them are in the ratio**

- (a) 1 : 2
- (b) 2 : 1
- (c) 1 : 1
- (d) 4 : 1

**Question 31: Temperature can be expressed as derived quantity in terms of**

- (a) length and mass
- (a) mass and time
- (a) length, mass and time
- (a) None of these

**Question 32: Electron volt is a unit of**

- A. potential difference
- B. charge
- C. energy
- D. capacity

**Question 33: Dimensions of impulse are**

- A. [MLT
^{–1}] - B. [MLT²]
- C. [MT
^{–2}] - D. [ML
^{–1}T^{–3}]

**Question 34: Potential is measured in**

- A. joule/coulomb
- B. watt/coulomb
- C. newton–second
- D. None of these

**Question 35: One Nanometer is equal to**

- A. 10
^{–9}m - B. 10
^{–6}m - C. 10
^{–10}m - D. 10
^{–3}m

**Question 36: Maxwell is the unit of**

- A. magnetic susceptibility
- B. intensity of Magnetisation
- C. magnetic Flux
- D. magnetic Permeability

**Question 37: Which of the following is derived physical quantity?**

- A. Mass
- B. Velocity
- C. Length
- D. Time

**Question 38: What are the units of magnetic permeability?**

- A. Wb A
^{–1}m^{–1} - B. Wb
^{–1}Am - C. Wb A m
^{–1} - D. Wb A
^{–1}m

**Question 39: The dimensions of pressure gradient are**

- A. [ML
^{–2}T^{–2}] - B. [ML
^{–2}T^{–1}] - C. [ML
^{–1}T^{–1}] - D. [ML
^{–1}T^{–2}]

**Question 40: The dimensions of Rydberg’s constant are**

- A. [M
^{0}L^{–1}T] - B. [MLT
^{–1}] - C. [M
^{0}L^{-1}T^{0}] - D. [ML
^{0}T^{2}]

**Question 41: ‘Farad’ is the unit of**

- A. resistance
- B. conductance
- C. capacitance
- D. inductance

**Question 42: S.I. unit of surface tension is**

- A. degree/cm
- B. N/m
- C. N/m²
- D. Nm

**Question 43: Which one of the following pairs does not have the same dimension?**

- A. Potential energy and Kinetic energy
- B. Density and specific gravity
- C. Focal length and height
- D. Gravitational force and frictional force

**Question 44: Which one of the following physical quantity has the same unit as that of pressure?**

- A. Angular momentum
- B. Stress
- C. Strain
- D. Work

**Question 45: The symbol of SI unit of inductance is H. It stands for**

- A. Holm
- B. Halogen
- C. Henry
- D. Hertz

**Question 46: Light year is a measure of**

- A. time
- B. distance
- C. total amount of light falling on the Earth in a year
- D. average intensity of light falling on the Earth in a year

**Question 47: Which one of the following is not a dimension less quantity?**

- A. Strain
- B. Relative density
- C. Frequency
- D. Angle

**Question 48: The dimensions of universal gas constant are**

- A. [L² M¹ T
^{–2}K^{–1}] - B. [L¹ M² T
^{–2}K^{–1}] - C. [L¹ M¹ T
^{–2}K^{–1}] - D. [L² M² T
^{–2}K^{–1}]

**Question 49: The dimensions of magnetic moment are**

- A. [L²A¹]
- B. [L²A
^{–1}] - C. [L²/A³]
- D. [LA²]

**Question 50: The dimensions of Wien’s constant are**

- A. [ML
^{0}TK] - B. [M
^{0}LT^{0}K] - (c) [M
^{0}L^{0}TK] - (d) [MLTK]

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**Airforce Agniveer Physics Answer Key**

01 – c | 02 – c | 03 – d | 04 – b | 05 – a | 06 – b | 07 – a | 08 – c | 09 – c | 10 – b |

11 – b | 12 – b | 13 – b | 14 – a | 15 – a | 16 – c | 17 – c | 18 – c | 19 – b | 20 – b |

21 – c | 22 – c | 23 – b | 24 – b | 25 – a | 26 – a | 27 – b | 28 – c | 29 – b | 30 – a |

31 – d | 32 – c | 33 – a | 34 – a | 35 – a | 36 – c | 37 – b | 38 – a | 39 – a | 40 – c |

41 – c | 42 – b | 43 – b | 44 – b | 45 – c | 46 – b | 47 – c | 48 – a | 49 – a | 50 – b |

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