Chapter 20 - Atomic Spectra - 5


Physics Class 12
1. The quantized radius of 1st Bohr orbit of a hydrogen atom is:




Physics Class 12
2. Electromagnetic rays which lies above the X-rays region are called:




Physics Class 12
3. One or more electrons are completely removed from an atom then atom is said to be:




Physics Class 12
4. The magnitude of ionization potential for H2 is:




Physics Class 12
5. If Eo represents the ground state then the Rydberg’s constant R can be expressed




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6. X-Rays diffraction reveals that they are:




Physics Class 12
7. Laser can be made from certain;




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