Physics can feel difficult when every question becomes a race against the clock. A consistent order of operations reduces avoidable mistakes and makes it easier to decide which questions deserve more time.
1. Check the units
Read the options and compare their dimensions with the quantity the question asks for. Dimensional analysis will not solve every numerical, but it can expose an incompatible option before you begin a long calculation.
2. Sketch the situation
For mechanics, optics and electrostatics, draw a quick diagram. Mark directions, known values and the quantity you need. A small sketch makes sign conventions and relationships easier to see.
3. Choose the governing relationship
Write the main equation before substituting values. Identify what is known, what is unknown and which quantities stay constant. This keeps the calculation tied to the question instead of turning into formula hunting.
4. Estimate before calculating
Use a rough magnitude check to see whether the answer should be large, small, positive or negative. Approximation is useful for checking options when the question permits it; keep full precision when the values require it.
5. Set a time limit
If you cannot see a clear route after a focused attempt, mark the question and continue. Returning with fresh attention is often more useful than spending several minutes on one uncertain problem.
Practise this sequence during timed tests and review which step caused each mistake. The goal is not to rush every question, but to use a reliable method and protect time for the questions you can solve.