Units and dimensional analysis are the foundation of physics calculations, especially for Class 9 and 10 students. Many numerical mistakes don’t happen because formulas are wrong—but because units are ignored or dimensions are misunderstood. This guide explains units and dimensional analysis in the simplest possible way, with clear examples and exam-focused explanations. What Are Units … Read more
Physics numericals often feel difficult not because the concepts are hard, but because students don’t follow a clear method. In Class 9 and 10, most mistakes happen due to skipped steps, wrong formulas, or unit errors. This guide breaks physics numerical problem-solving into simple, repeatable steps that help you score better in exams and feel … Read more
Significant figures are a high-scoring but mistake-prone topic for Class 9, Class 10, and O-Level students. The best way to master them is structured worksheet practice, moving from basics to exam-level problems. Below are ready-to-use worksheet sections, designed exactly according to school and O-Level exam patterns. Worksheet 1: Identifying Significant Figures (Class 9 – Foundation … Read more
Students often mix up significant figures and decimal places, especially in exams. The rules look similar, but they are used in different situations. Once you understand the difference clearly, most calculation mistakes disappear. Let’s explain it in a simple, exam-friendly way. What Are Significant Figures? Significant figures show how precise a number is, based on … Read more
In physics and chemistry, answers are not just about getting the right number — they’re about showing the correct level of precision. That’s where significant figures become extremely important. Many students lose marks even when their calculation is correct, simply because the final answer is not written with proper significant figures. This guide explains how … Read more
Significant figures look simple at first—but in exams, small mistakes can cost easy marks. Most students don’t lose marks because they don’t know the rules. They lose marks because they apply the right rules in the wrong way. Let’s go through the most common errors students make in significant figures and, more importantly, how you … Read more
When students start working with significant figures, addition and subtraction often feel confusing. That’s because these operations do NOT follow the same rules as multiplication and division. Once you understand the core idea, it actually becomes very easy. Let’s break it down clearly, step by step. What Is the Rule for Significant Figures in Addition … Read more
Understanding significant figures is a must-have skill in science and math. Most students know the rules—but practice is where real confidence comes from. Below you’ll find carefully structured practice questions, starting from basic identification and moving toward real calculation-based problems, just like in exams. What Are Significant Figures? Significant figures are the digits in a … Read more
When you multiply or divide numbers in science, the final answer must reflect the least precise measurement. This is where significant figures rules are applied. Many students lose marks by applying addition/subtraction rules instead of multiplication/division rules. Let’s clear this confusion step by step. The Main Rule (Most Important) In multiplication and division, the final … Read more
Significant figures tell us how precise a measurement is. In science and physics, you don’t just write numbers — you show how accurate those numbers are. That’s where significant figures come in. Many students lose marks not because they don’t know the rules, but because they miscount significant figures in measurements. Let’s fix that properly. … Read more