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RRB Group D General Science - Physics Syllabus

The General Science - Physics syllabus for RRB Group D in full: 4 chapters, 13 topics and 33 sub-topics, every one listed below, plus 51 General Science - Physics flashcards with answers.

4Chapters
13Topics
33Sub-topics
51Flashcards

General Science - Physics syllabus: all 4 chapters

Expand any chapter to see its topics and sub-topics.

  1. Measurement and Motion

     4 topics
    • Units and Measurement
      • SI units and fundamental quantities
      • Measuring instruments and accuracy
    • Motion in a Straight Line
      • Distance, displacement, speed and velocity
      • Acceleration and equations of motion
    • Force and Laws of Motion
      • Newton's three laws of motion
      • Momentum and inertia
      • Friction
    • Gravitation
      • Universal law of gravitation
      • Mass, weight and free fall

  2. Work, Energy and Simple Machines

     3 topics
    • Work and Energy
      • Work done and units
      • Kinetic and potential energy
      • Conservation of energy
    • Power
      • Definition and units of power
      • Power calculations
    • Simple Machines
      • Levers, pulleys and inclined planes
      • Mechanical advantage and efficiency

  3. Heat, Light and Sound

     3 topics
    • Heat and Temperature
      • Temperature scales
      • Modes of heat transfer
      • Change of state and latent heat
    • Light
      • Reflection and refraction
      • Mirrors and lenses
      • Human eye and defects of vision
      • Dispersion and scattering
    • Sound
      • Nature and propagation of sound
      • Frequency, pitch and loudness
      • Echo and ultrasound

  4. Electricity and Magnetism

     3 topics
    • Electric Current and Circuits
      • Charge, current, potential difference
      • Ohm's law and resistance
      • Series and parallel combinations
    • Heating and Power Effects
      • Heating effect of current
      • Electric power and energy consumption
    • Magnetism
      • Magnets and magnetic field
      • Electromagnetism and electromagnetic induction

RRB Group D General Science - Physics flashcards — 51 questions with answers

  1. What is the SI unit of length, and what fundamental quantity does it measure?

    The metre (m); it measures length/distance.

  2. List the seven fundamental (base) quantities in the SI system.

    Length (m), mass (kg), time (s), electric current (A), temperature (K), amount of substance (mol), and luminous intensity (cd).

  3. What is the difference between a scalar and a vector quantity? Give one example of each.

    A scalar has only magnitude (e.g., mass, speed, distance); a vector has both magnitude and direction (e.g., velocity, force, displacement).

  4. Define speed and velocity, and state how they differ.

    Speed is distance travelled per unit time (a scalar). Velocity is displacement per unit time (a vector, having direction). Speed = distance/time; velocity = displacement/time.

  5. Define acceleration and give its SI unit.

    Acceleration is the rate of change of velocity with time. SI unit: metre per second squared (m/s^2).

  6. State the three equations of motion for uniform acceleration.

    v = u + at; s = ut + (1/2)at^2; v^2 = u^2 + 2as, where u = initial velocity, v = final velocity, a = acceleration, t = time, s = displacement.

  7. On a distance-time graph, what does the slope represent? On a velocity-time graph, what do the slope and the area under the curve represent?

    Slope of distance-time graph = speed. On a velocity-time graph: slope = acceleration, and area under the curve = distance/displacement travelled.

  8. What is the difference between uniform and non-uniform motion?

    In uniform motion an object covers equal distances in equal intervals of time (constant velocity, zero acceleration). In non-uniform motion the distances covered in equal time intervals are unequal (velocity changes, so acceleration is non-zero).

  9. State Newton's first law of motion.

    An object remains at rest or in uniform motion in a straight line unless acted upon by an external unbalanced force. (Law of inertia.)

  10. State Newton's second law of motion and give its mathematical form.

    The rate of change of momentum of a body is proportional to the applied force and acts in the direction of the force. Mathematically, F = ma (force = mass x acceleration).

  11. State Newton's third law of motion.

    For every action there is an equal and opposite reaction; the forces act on two different bodies.

  12. Define inertia and state how it depends on mass.

    Inertia is the tendency of a body to resist any change in its state of rest or uniform motion. It is directly proportional to the mass of the body; greater mass means greater inertia.

  13. Define momentum and give its SI unit and formula.

    Momentum is the product of mass and velocity (p = mv). It is a vector. SI unit: kilogram metre per second (kg.m/s).

  14. State the law of conservation of momentum.

    In the absence of an external force, the total momentum of a system of bodies remains constant; the momentum before an interaction equals the momentum after it.

  15. What is the SI unit of force, and how is it defined in base units?

    The newton (N). One newton is the force that gives a mass of 1 kg an acceleration of 1 m/s^2 (1 N = 1 kg.m/s^2).

  16. State Newton's universal law of gravitation with its formula.

    Every two bodies attract each other with a force directly proportional to the product of their masses and inversely proportional to the square of the distance between them: F = G(m1.m2)/r^2, where G is the gravitational constant.

  17. What is the value of acceleration due to gravity (g) on Earth's surface, and how does it differ from the universal gravitational constant G?

    g is approximately 9.8 m/s^2 and varies with location; G is the universal gravitational constant (6.67 x 10^-11 N.m^2/kg^2) and is the same everywhere.

  18. What is the difference between mass and weight?

    Mass is the amount of matter in a body (constant, SI unit kg). Weight is the gravitational force on the body (W = mg, a vector measured in newtons) and varies with g.

  19. Why does the weight of an object on the Moon differ from its weight on Earth?

    The Moon's gravitational acceleration is about 1/6th that of Earth, so an object weighs about one-sixth of its Earth weight on the Moon, although its mass stays the same.

  20. Define work in physics and give its SI unit and formula.

    Work is done when a force moves an object in the direction of the force: W = F x s x cos(theta). SI unit: joule (J); 1 J = 1 N.m.

Show the other 31 General Science - Physics flashcards

  1. When is the work done by a force zero?

    Work is zero when there is no displacement, when the force is zero, or when the force is perpendicular to the displacement (theta = 90 degrees).

  2. Define kinetic energy and give its formula.

    Kinetic energy is the energy possessed by a body due to its motion: KE = (1/2)mv^2.

  3. Define potential energy (gravitational) and give its formula.

    Gravitational potential energy is the energy possessed by a body due to its position/height: PE = mgh.

  4. State the law of conservation of energy.

    Energy can neither be created nor destroyed; it can only be transformed from one form to another, and the total energy of an isolated system remains constant.

  5. Define power and give its SI unit and formula.

    Power is the rate of doing work or the rate of energy transfer: P = W/t. SI unit: watt (W); 1 W = 1 J/s.

  6. How many watts are there in one horsepower (HP)?

    1 horsepower is approximately 746 watts.

  7. What is 1 kilowatt-hour (kWh), and what does it measure?

    1 kWh is the energy consumed when 1 kilowatt of power is used for 1 hour; it equals 3.6 x 10^6 joules. It is the commercial unit of electrical energy (the 'unit' on electricity bills).

  8. What is a simple machine, and what is its main purpose?

    A simple machine is a basic mechanical device that changes the magnitude or direction of a force to make work easier. Examples: lever, pulley, inclined plane, wedge, screw, wheel and axle.

  9. Define mechanical advantage of a machine.

    Mechanical advantage (MA) is the ratio of load (output force) to effort (input force): MA = Load/Effort. It tells how many times a machine multiplies the effort.

  10. What are the three classes of levers? Distinguish them by the position of the fulcrum, load, and effort.

    Class 1: fulcrum between load and effort (e.g., seesaw, scissors). Class 2: load between fulcrum and effort (e.g., wheelbarrow, nutcracker). Class 3: effort between fulcrum and load (e.g., tongs, human forearm).

  11. Why can no machine be 100% efficient?

    Because some input energy is always lost to friction, heat, sound, etc., so the useful output energy is always less than the input energy; efficiency = (output/input) x 100% is always below 100%.

  12. What is the difference between heat and temperature?

    Heat is the total thermal energy transferred between bodies due to a temperature difference (measured in joules/calories). Temperature is the degree of hotness or coldness, a measure of average kinetic energy of particles (measured in kelvin/celsius).

  13. What are the three modes of heat transfer? Briefly define each.

    Conduction (heat transfer through direct particle contact, mainly in solids), convection (heat transfer by movement of fluid - liquids/gases), and radiation (heat transfer by electromagnetic waves, needing no medium).

  14. Give the formula to convert Celsius to Fahrenheit and to Kelvin.

    F = (9/5)C + 32; K = C + 273.15 (often taken as C + 273).

  15. What is the boiling point and freezing point of water in Celsius and Kelvin at standard pressure?

    Freezing point: 0 degrees C = 273.15 K; boiling point: 100 degrees C = 373.15 K.

  16. What is latent heat?

    Latent heat is the heat energy absorbed or released by a substance during a change of state (e.g., melting or boiling) at constant temperature, without a change in temperature.

  17. State the laws of reflection of light.

    1) The angle of incidence equals the angle of reflection. 2) The incident ray, the reflected ray, and the normal at the point of incidence all lie in the same plane.

  18. What is refraction of light, and why does it occur?

    Refraction is the bending of light as it passes from one transparent medium to another. It occurs because the speed of light changes when the medium changes (it bends toward the normal entering a denser medium and away when entering a rarer medium).

  19. What type of image and use is associated with a concave mirror versus a convex mirror?

    A concave mirror can form real or virtual, magnified images (used in shaving mirrors, headlights, dentists' mirrors). A convex mirror always forms a virtual, diminished, erect image with a wider field of view (used as rear-view/side mirrors in vehicles).

  20. What is the difference between a convex (converging) lens and a concave (diverging) lens?

    A convex lens is thicker at the centre and converges light to a focus (can form real images; used in magnifying glasses, cameras, to correct hypermetropia). A concave lens is thinner at the centre, diverges light, always forms a virtual erect diminished image (used to correct myopia).

  21. What causes the dispersion of white light, and what are the seven colours of the spectrum in order?

    Dispersion occurs because different colours bend by different amounts (different refractive indices) when passing through a prism. The order (VIBGYOR) is Violet, Indigo, Blue, Green, Yellow, Orange, Red.

  22. Which defects of vision are corrected by concave and convex lenses respectively?

    Myopia (short-sightedness) is corrected by a concave (diverging) lens; hypermetropia (long-sightedness) is corrected by a convex (converging) lens.

  23. What is sound, and what kind of wave is it?

    Sound is a form of energy produced by vibrating bodies that travels as a longitudinal mechanical wave, requiring a material medium (solid, liquid, or gas) to propagate; it cannot travel through a vacuum.

  24. In which medium does sound travel fastest - solids, liquids, or gases - and why?

    Sound travels fastest in solids (slowest in gases) because particles are packed most closely in solids, allowing vibrations to be transmitted more quickly.

  25. What is the approximate speed of sound in air at room temperature?

    About 343 m/s (commonly taken as around 340 m/s) at about 20 degrees C; it increases with temperature.

  26. What is an echo, and what is the minimum distance needed to hear one?

    An echo is the repetition of a sound caused by reflection of sound waves from a surface. To hear a distinct echo, the reflecting surface must be at least about 17 metres away (so the time gap is at least 0.1 second).

  27. What are the audible, infrasonic, and ultrasonic frequency ranges for the human ear?

    Audible range: 20 Hz to 20,000 Hz (20 kHz). Infrasonic: below 20 Hz. Ultrasonic: above 20,000 Hz.

  28. State Ohm's law and give its formula.

    Ohm's law states that, at constant temperature, the current through a conductor is directly proportional to the potential difference across it: V = IR (voltage = current x resistance).

  29. State the SI units of electric current, potential difference (voltage), and resistance.

    Current: ampere (A); potential difference/voltage: volt (V); resistance: ohm (omega).

  30. How do total resistance and current behave in a series circuit versus a parallel circuit?

    In series: resistances add (R = R1 + R2 + ...), the same current flows through all components, and total resistance increases. In parallel: 1/R = 1/R1 + 1/R2 + ..., voltage is the same across each branch, total resistance decreases, and total current is the sum of branch currents.

  31. State the formulas for electrical power and the heat produced by current (Joule's heating effect).

    Electrical power: P = VI = I^2R = V^2/R. Heat produced (Joule's law of heating): H = I^2Rt, where I = current, R = resistance, t = time.

RRB Group D General Science - Physics FAQ

What is in the RRB Group D General Science - Physics syllabus?

RRB Group D General Science - Physics is split into 4 chapters: Measurement and Motion, Work, Energy and Simple Machines, Heat, Light and Sound and Electricity and Magnetism. Together they contain 13 topics and 33 sub-topics.

How many chapters are in RRB Group D General Science - Physics?

4 chapters, containing 13 topics and 33 sub-topics. The largest chapter is Measurement and Motion, with 4 topics.

Are there flashcards for RRB Group D General Science - Physics?

Yes — a 51-card General Science - Physics deck, printed in full in the flashcards section of this page and available in the Examius app with spaced repetition. The free plan covers one exam of your choice, including its flashcards; Examius Pro, a one-time purchase, unlocks every other exam and deck.