Скачать или смотреть 12th Physics – Chapter 8: Dual Nature of Radiation and Matter | Numerical Problem Exercise 10

Welcome to EMR Physics!
In this video, we solved Exercise 10 from Chapter 8 – Dual Nature of Radiation & Matter in Tamilnadu 12th Standard Physics. Perfect for Board Exam Preparation, Revision, and Full Marks Scoring in the Public Exam.
This video covers every important theory, derivation, formula, and numerical problem you need for board exams, NEET, and JEE fundamentals.
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✨ What You Will Learn in This Video
🔹 Photoelectric effect – concept, laws & Einstein’s equation
🔹 Work function, threshold frequency & stopping potential
🔹 Variation of photocurrent with intensity, frequency & voltage
🔹 Wave nature of particles – de Broglie wavelength
🔹 Matter waves & their significance
🔹 Applications of wave–particle duality
🔹 Important solved numerical problems (board-focused)
🔹 Exam tips & shortcuts for quick solving
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🎯 Why This Video is Important
✔ 100% syllabus coverage
✔ Easy explanations from basics
✔ Perfect for Tamil Nadu State Board Public Exams
✔ Concept clarity + numerical mastery
✔ High-scoring chapter in Part II

Problem solved in this Video:

At the given point of time, the earth receives energy from sun at 4 cal cm–2 min–1. Determine the number of photons received on the surface of the Earth per cm2 per minute. (Given : Mean wavelength of sun light =5500 Å)

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