Same chapter3 marksDifficulty: Medium
State two limitations of dimensional analysis.
Physical World and Measurement
3 marksDifficulty: Medium
Distinguish between random and systematic errors, and state how each can be reduced.
Original Khojo Papers practice question — not from a past board paper.
Answer
A random error varies unpredictably in size and sign from one reading to the next and is reduced by taking many readings and averaging them. A systematic error is consistently in one direction, arising from a faulty instrument, a wrong zero or a flawed method, and is reduced only by finding and correcting its cause.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Averaging cannot remove a systematic error, which is why zero corrections matter.
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