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09 Nov Precision vs Accuracy in Physics: Easy Guide with Examples | 9th Class PTCB 2025

Learn Precision vs Accuracy in Physics with simple bullseye examples! Includes timing devices, least count rules & practice questions. Complete guide for 9th PTCB 2025! 🎯⏱️

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  By Bilal Ansar

09 Nov Length Measuring Instruments in Physics | 9th Grade PTCB Complete Guide

Explore the complete tutorial on Length Measuring Instruments for 9th Physics PTCB. Learn about metre rule, measuring tape, Vernier caliper, and micrometer screw gauge with examples, least count calculations, and tips for precise measurements.

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  By Bilal Ansar