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Physics Practice

HSC Physics — Practice Problems

15 MCQ questions covering mechanics, electricity, waves, nuclear physics, and thermal physics. Select an option to check your answer and view the explanation.

Mechanics

Electricity

Waves

Nuclear Physics

Thermal Physics

Intuition

Physics connects mathematical models to physical reality: Every physics equation represents a relationship between measurable quantities. The art of physics is applying the right model to the right situation.

Why it matters: Physics understanding enables technological innovation and explains natural phenomena from everyday events to cosmic processes.

The key insight: Units are your built-in error checker, if the units do not balance on both sides of an equation, something is wrong.

Common Mistakes

Confusing centripetal and centrifugal forces: Centripetal force is real and directed toward the center of circular motion. Centrifugal force is a fictitious force perceived in a rotating reference frame. In inertial frames, only centripetal force exists.

Using the wrong value for g in energy calculations: Gravitational potential energy mghmgh assumes constant gg near Earths surface. For satellite orbits or large height changes, use U=−GMm/rU = -GMm/r. Using mghmgh for orbital mechanics gives wrong answers.

Confusing current and voltage in circuit analysis: Current is the flow rate of charge (amperes). Voltage is the energy per unit charge (volts). In series circuits, current is the same; voltage divides. In parallel circuits, voltage is the same; current divides.

Cross-References

  • Site Home: Main landing page for hsc notes.
  • Practice: Practice problems for revision.

Detailed Content

Core Concepts

Worked Examples

Common Mistakes

  • Rushing through foundational material
  • Not practising problems after reading
  • Failing to connect concepts across topics

Further Reading