Dse Physics Mock Paper -

Ensure you write down the formula, substitution, and final answer with correct units.

| Q# | Topic | Mistake Type | Correct Concept | | :--- | :--- | :--- | :--- | | 12 | Force & Motion | Used v=u+at instead of s=ut+½at² | Uniform accel. requires correct eqn | | 28 | Wave | Forgot phase reversal (reflection) | Fixed end → 180° shift | dse physics mock paper

Students often forget to define the positive and negative directions in projectile motion or momentum problems. Missing a negative sign on a velocity vector will cascade errors down an entire 6-mark question. Structural Explanations (Heat & Gases) Ensure you write down the formula, substitution, and

A sealed container of volume 0.2 m³ holds an ideal gas at 300 K and 150 kPa. Calculate the number of moles. Missing a negative sign on a velocity vector

Understanding the physics but failing to use the specific keywords required by the HKEAA marking scheme. 2. Build a Personal "Error Book"