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Objective Questions

Latest CG Vyapam Lecturer Physics Exam Question (Objective Questions), MCQ in English

Subjects : Modern and Nuclear Physics, Gravitation and Thermodynamics, Mechanics, Sound and Light, Electrodynamics and Magnetism, Educational Psychology, Assessment and Evaluation in Education, Pedagogy, Pedagogical Attitudes, Language Knowledge and General Studies

Question Bank CG Vyapam Lecturer (Physics) Exam - English
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Modern and Nuclear Physics

Question 1Single Answer
The charge on an electron is approximately:
  1. A
    −1.6 × 10⁻¹⁹ C
  2. B
    +1.6 × 10⁻¹⁹ C
  3. C
    −9.1 × 10⁻³¹ C
  4. D
    +9.1 × 10⁻³¹ C
Question 2Single Answer
The mass of an electron is approximately:
  1. A
    1.67 × 10⁻²⁷ kg
  2. B
    1.6 × 10⁻¹⁹ kg
  3. C
    9.1 × 10⁻³¹ kg
  4. D
    6.63 × 10⁻³⁴ kg
Question 3Single Answer
One electron-volt is equal to:
  1. A
    9.1 × 10⁻³¹ J
  2. B
    1.6 × 10⁻¹⁹ J
  3. C
    6.63 × 10⁻³⁴ J
  4. D
    3 × 10⁸ J
Question 4Single Answer
An electron-volt is a unit of:
  1. A
    Electric charge
  2. B
    Electric current
  3. C
    Energy
  4. D
    Potential
Question 5Single Answer
The minimum energy required to remove an electron from a metal surface is called:
  1. A
    Ionization energy
  2. B
    Activation energy
  3. C
    Binding energy
  4. D
    Work function
Question 6Single Answer
The work function of a metal generally depends upon:
  1. A
    Nature of the metal surface
  2. B
    Intensity of incident light only
  3. C
    Distance from the light source
  4. D
    Area of the metal plate only
Question 7Single Answer
Photoelectric emission occurs when electromagnetic radiation falls on:
  1. A
    Any insulating material
  2. B
    A suitable photosensitive surface
  3. C
    A vacuum alone
  4. D
    A magnetic material only
Question 8Single Answer
Photoelectric effect provides evidence for the:
  1. A
    Wave nature of electrons
  2. B
    Gravitational nature of light
  3. C
    Particle nature of light
  4. D
    Magnetic nature of electrons
Question 9Single Answer
The energy of a photon is given by:
  1. A
    E = mc
  2. B
    E = h/ν
  3. C
    E = hν
  4. D
    E = mv
Question 10Single Answer
The momentum of a photon is:
  1. A
    hλ
  2. B
    hcλ
  3. C
    λ/h
  4. D
    h/λ
Question 11Single Answer
The rest mass of a photon is:
  1. A
    Zero
  2. B
    Equal to electron mass
  3. C
    Infinite
  4. D
    Equal to proton mass
Question 12Single Answer
The speed of a photon in vacuum is:
  1. A
    3 × 10⁶ m/s
  2. B
    Variable with frequency
  3. C
    3 × 10¹⁰ m/s
  4. D
    3 × 10⁸ m/s
Question 13Single Answer
According to Einstein's photoelectric equation:
  1. A
    hν = φ − Kmax
  2. B
    φ = hν + Kmax
  3. C
    hν = Kmax − φ
  4. D
    hν = φ + Kmax
Question 14Single Answer
In Einstein's photoelectric equation, φ represents:
  1. A
    Photon momentum
  2. B
    Frequency
  3. C
    Work function
  4. D
    Stopping potential
Question 15Single Answer
Threshold frequency is the minimum frequency required to:
  1. A
    Produce interference
  2. B
    Produce polarization
  3. C
    Produce diffraction
  4. D
    Produce photoelectric emission

Gravitation and Thermodynamics

Question 16Single Answer
Kepler's first law states that planets move around the Sun in:
  1. A
    Circular orbits with Earth at the center
  2. B
    Parabolic orbits
  3. C
    Elliptical orbits with the Sun at one focus
  4. D
    Elliptical orbits with the Sun at the center
Question 17Single Answer
Kepler's second law is also known as the law of:
  1. A
    Periods
  2. B
    Gravitation
  3. C
    Areas
  4. D
    Inertia
Question 18Single Answer
According to Kepler's second law, the line joining a planet and the Sun sweeps:
  1. A
    Equal distances in equal times
  2. B
    Equal angles in equal times
  3. C
    Equal areas in equal times
  4. D
    Unequal areas in equal times
Question 19Single Answer
A planet moves fastest when it is:
  1. A
    Farthest from the Sun
  2. B
    At the center of its orbit
  3. C
    At the minor axis
  4. D
    Nearest to the Sun
Question 20Single Answer
The point in a planetary orbit nearest to the Sun is called:
  1. A
    Perihelion
  2. B
    Aphelion
  3. C
    Perigee
  4. D
    Apogee
Question 21Single Answer
The point in a planetary orbit farthest from the Sun is called:
  1. A
    Perihelion
  2. B
    Perigee
  3. C
    Aphelion
  4. D
    Focus
Question 22Single Answer
Kepler's third law states that the square of orbital period is proportional to:
  1. A
    Orbital radius
  2. B
    Square of orbital radius
  3. C
    Fourth power of semi-major axis
  4. D
    Cube of semi-major axis
Question 23Single Answer
According to Kepler's third law:
  1. A
    T ∝ r³
  2. B
    T³ ∝ r²
  3. C
    T² ∝ r³
  4. D
    T² ∝ r²
Question 24Single Answer
For planets revolving around the same star, T²/r³ is:
  1. A
    Variable
  2. B
    Infinite
  3. C
    Zero
  4. D
    Constant
Question 25Single Answer
Kepler's laws were explained theoretically by:
  1. A
    Galileo
  2. B
    Einstein only
  3. C
    Newton
  4. D
    Huygens
Question 26Single Answer
Newton's universal law of gravitation states that gravitational force varies inversely as:
  1. A
    Distance
  2. B
    Cube of distance
  3. C
    Square of distance
  4. D
    Fourth power of distance
Question 27Single Answer
The gravitational force between masses m₁ and m₂ separated by distance r is:
  1. A
    Gm₁m₂/r²
  2. B
    Gm₁m₂/r
  3. C
    Gm₁m₂r²
  4. D
    G(m₁ + m₂)/r²
Question 28Single Answer
The SI unit of universal gravitational constant G is:
  1. A
    N m kg⁻²
  2. B
    kg m² s⁻¹
  3. C
    N kg² m⁻²
  4. D
    N m² kg⁻²
Question 29Single Answer
The dimensional formula of G is:
  1. A
    [M⁻¹L³T⁻²]
  2. B
    [ML³T⁻²]
  3. C
    [M⁻¹L²T⁻²]
  4. D
    [MLT⁻²]
Question 30Single Answer
The approximate value of G is:
  1. A
    3 × 10⁸ N m² kg⁻²
  2. B
    9.8 N m² kg⁻²
  3. C
    6.67 × 10⁻¹¹ N m² kg⁻²
  4. D
    1.6 × 10⁻¹⁹ N m² kg⁻²

Mechanics, Sound and Light

Question 31Single Answer
Physics is primarily concerned with the study of:
  1. A
    Living organisms only
  2. B
    Languages
  3. C
    Historical events
  4. D
    Matter, energy, and their interactions
Question 32Single Answer
Which of the following is a fundamental physical quantity in SI?
  1. A
    Force
  2. B
    Energy
  3. C
    Length
  4. D
    Pressure
Question 33Single Answer
The SI unit of length is:
  1. A
    Centimetre
  2. B
    Foot
  3. C
    Metre
  4. D
    Inch
Question 34Single Answer
The SI unit of mass is:
  1. A
    Gram
  2. B
    Pound
  3. C
    Tonne
  4. D
    Kilogram
Question 35Single Answer
The SI unit of time is:
  1. A
    Second
  2. B
    Hour
  3. C
    Minute
  4. D
    Day
Question 36Single Answer
Which is a derived SI unit?
  1. A
    Metre
  2. B
    Kilogram
  3. C
    Newton
  4. D
    Second
Question 37Single Answer
The SI unit of force is:
  1. A
    Joule
  2. B
    Watt
  3. C
    Pascal
  4. D
    Newton
Question 38Single Answer
One newton is equal to:
  1. A
    kg m s⁻¹
  2. B
    kg m² s⁻²
  3. C
    kg m s⁻²
  4. D
    kg m⁻¹ s⁻²
Question 39Single Answer
The dimensional formula of velocity is:
  1. A
    [LT⁻²]
  2. B
    [LT⁻¹]
  3. C
    [MLT⁻¹]
  4. D
    [L²T⁻¹]
Question 40Single Answer
The dimensional formula of acceleration is:
  1. A
    [LT⁻¹]
  2. B
    [MLT⁻²]
  3. C
    [LT⁻²]
  4. D
    [L²T⁻²]
Question 41Single Answer
The dimensional formula of force is:
  1. A
    [MLT⁻¹]
  2. B
    [MLT⁻²]
  3. C
    [ML²T⁻²]
  4. D
    [M⁻¹LT⁻²]
Question 42Single Answer
The dimensional formula of energy is:
  1. A
    [MLT⁻²]
  2. B
    [ML²T⁻²]
  3. C
    [ML²T⁻¹]
  4. D
    [M²LT⁻²]
Question 43Single Answer
The dimensional formula of pressure is:
  1. A
    [MLT⁻²]
  2. B
    [ML⁻¹T⁻²]
  3. C
    [ML²T⁻²]
  4. D
    [M⁻¹LT⁻²]
Question 44Single Answer
Which pair has the same dimensions?
  1. A
    Pressure and force
  2. B
    Force and energy
  3. C
    Work and torque
  4. D
    Power and momentum
Question 45Single Answer
Dimensional analysis cannot directly determine:
  1. A
    Correctness of dimensions
  2. B
    Relation among physical quantities
  3. C
    Numerical dimensionless constants
  4. D
    Dimensions of a derived quantity

Electrodynamics and Magnetism

Question 46Single Answer
Electric charge produced by rubbing two bodies is known as:
  1. A
    Current electricity
  2. B
    Frictional electricity
  3. C
    Magnetic induction
  4. D
    Electromagnetic induction
Question 47Single Answer
The two types of electric charge are:
  1. A
    Positive and negative
  2. B
    North and south
  3. C
    Up and down
  4. D
    Static and dynamic
Question 48Single Answer
Like electric charges:
  1. A
    Attract each other
  2. B
    Repel each other
  3. C
    Have no interaction
  4. D
    Always neutralize
Question 49Single Answer
Unlike electric charges:
  1. A
    Repel each other
  2. B
    Rotate around each other
  3. C
    Have no force
  4. D
    Attract each other
Question 50Single Answer
The SI unit of electric charge is:
  1. A
    Ampere
  2. B
    Coulomb
  3. C
    Volt
  4. D
    Farad
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