RRB Group D General Science - Physics Syllabus

General Science - Physics syllabus — full chapter and topic list

Expand any chapter to see its topics and sub-topics. This is the whole examinable outline for General Science - Physics in RRB Group D, not a summary of it.

1. 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. 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. 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. 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

General Science - Physics flashcards for RRB Group D

22 of 51 cards from the General Science - Physics deck — real questions with worked 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.

21. 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).

22. 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.

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