The ratio of the magnitude of the kinetic energy to the potential energy of an electron in the 5th excited state of a hydrogen atom is :
1)4 2)1/4. 3)1/2. 4)1
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Frequently Asked Questions
How to prepare for IIT-JEE Physics?
To prepare for IIT-JEE Physics, focus on understanding concepts rather than memorizing formulas. Practice solving a variety of problems, especially previous years’ questions. Create a study schedule that covers all topics, with extra time for challenging areas like Mechanics and Electromagnetism. Regular revision and mock tests are essential for success.
What is the difference between elastic and inelastic collisions?
In elastic collisions, both momentum and kinetic energy are conserved. Examples include collisions between hard billiard balls. In inelastic collisions, only momentum is conserved while some kinetic energy is converted to other forms like heat or sound. Most real-world collisions are inelastic to some degree.
What is the photoelectric effect?
The photoelectric effect is the emission of electrons from a material when light shines on it. Einstein explained that light consists of discrete packets of energy called photons. If a photon has enough energy (above the work function of the material), it can eject an electron. This phenomenon demonstrates the particle nature of light and was crucial in the development of quantum theory.
