12th Physics – Chapter 9: Atomic and Nuclear Physics | Numerical Problem Exercise 3

In this video, we solve important numerical problem 1 from Unit 9: Atomic and Nuclear Physics for Class 12 Tamil Nadu State Board students. These questions are highly useful for board exam preparation and help you understand how to apply formulas correctly in problems. ✨ What you will learn: ✔️ Step-by-step solutions to important numericals ✔️ Applications of atomic models & nuclear physics formulas ✔️ Typical board exam question patterns ✔️ Tips to avoid common calculation mistakes 📚 Suitable for: 🔹 TN State Board Class 12 students 🔹 Quick revision before exams 🔹 Strengthening numerical problem-solving skills Problem solved in this video: (a) A hydrogen atom is excited by radiation of wavelength 97.5 nm. Find the principal quantum number of the excited state. 💡 Practice along with the video and pause to try each problem yourself for maximum benefit. 👉 If this helps you, Like 👍, Share 🔁 and Subscribe 🔔 to EMR Physics for more chapter-wise numericals and concept videos. #12thphysics #physicsnumericals #emrphysics #physicsproblems #physicsboardexam #atomicphysics #nuclearphysics