EV Class 9-10 Physics Guide | Complete SSC Notes, MCQs, CQs & Solutions

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⚡ EV · SSC · Class 9-10 · NCTB Aligned

⚛️ Physics Guide — Complete & Interactive

Master every chapter with notes, MCQs, CQs, and visual learning tools.

📚 All Chapters (click to jump to detail below)

🔽 Scroll down to explore Chapter One interactive detail with MCQs, CQs, and more.

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✨ Chapter One: Physical Quantities & Measurements

Interactive notes, MCQs, Creative Questions & Board patterns.

📖 Core Concepts & Measurements

🔹 Fundamental Quantities

Length (m), Mass (kg), Time (s), Electric Current (A), Temperature (K), Amount of Substance (mol), Luminous Intensity (cd).

🔹 Derived Quantities

Velocity (m/s), Acceleration (m/s²), Force (kg·m/s²), Work/Energy (J), Pressure (Pa).

🔹 Dimension

Example: Velocity [LT⁻¹], Force [MLT⁻²].

🔹 Measuring Instruments

Metre scale, Vernier calipers (0.05 mm), Screw gauge (0.01 mm), Stopwatch.

🔹 Error & Accuracy

Absolute, Relative, Percentage error. Precision vs Accuracy.

💡 Fun Tip: Physics is about measuring the universe. A screw gauge can measure a hair's width!

🔬 MCQ Practice (with instant feedback)

📌 Creative Question 1: Vernier Calipers

A student measured length using Vernier calipers: MSR = 4.2 cm, VC = 0.005 cm, coincidence = 10.

a) What is least count?
b) Why is Vernier more suitable?
c) Calculate length.
d) How to improve accuracy?

Solution (c): L = 4.2 + (10 × 0.005) = 4.25 cm

📌 Creative Question 2: Screw Gauge

Pitch = 1mm, circular divisions = 100.

a) Pitch? b) Least count? c) Calculate LC. d) Why suitable for thin wire?

LC = 1/100 = 0.01 mm

📌 Creative Question 3: Dimension Analysis

F = ma. Determine dimensional formula and check s = ut + ½at².

🎯 Last Decade Board Recurrence

• ⭐ Vernier constant (⭐⭐⭐⭐⭐)
• ⭐ Vernier coincidence (⭐⭐⭐⭐⭐)
• ⭐ Dimension analysis (⭐⭐⭐⭐⭐)
• ⭐ Screw gauge LC (⭐⭐⭐⭐)
• ⭐ Percentage error (⭐⭐⭐⭐⭐)
• ⭐ Fundamental vs derived (⭐⭐⭐⭐)

⭐ Top 15 Exam Focus Questions

1. What is Physics?
2. Fundamental vs derived quantities.
3. Seven SI base units.
4. Dimension of force.
5. Vernier constant calculation.
6. Screw gauge least count.
7. Calculate Vernier length.
8. Absolute & relative error.
9. Percentage error comparison.
10. Why repeated measurement?
11. Scientific notation.
12. Prefix definition & examples.
13. Significant figures.
14. Pitch of screw gauge.
15. Accuracy vs precision.

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