Photons | Photoelectric effect | Law of photoelectric emission
Photons 1) Photons are the packets of energy (or energy particles) which are emitted by a source of radiation. They are travel in straig...
Potential Energy
Potential Energy of a body 1. The energy possessed by a body by virtue of its position or configuration is called its potential . It is m...
Quantum Numbers
What are Quantum Numbers? Quantum Numbers are the numbers required to completely specify the position of electrons . In the presence of ...
Ray optics
What is ray optics Ray optics is based on the assumption that light travels along straight lines. Taking average wavelength of visible li...
Reflection of sound
Describe reflection of sound? 1. Because sound propagates in the form of waves , it shows both the phenomenon of reflection and refracti...
Resistance
Describe the Resistance? Resistance Ohm's law of Resistance 1) It states that the current (I) flowing through a conductor is...