CBSE Class 11 science: Dual Nature Videos | Structure of Atom

• The de Broglie wavelength of an electron travelling with 20% of velocity of light is nearly equal to
• A light of wavelength 3 × 10 ^- 7 strikes a metal surface. the energy of incident light in electron volt is
• The frequency of a light whose wavelength is 12 metres is
• For hydrogen atom the energy of a photon emitted during a transition from n=2 state to n=1 state is 
• The de broglie wavelength of a particle with mass 1kg and velocity 100m/s is 
• Please solve the doubt in the image uploaded below.
  
• What is Heisenberg's uncertainty principle?
• On the basis of Heisenberg's uncertainty principle, show that the electron can not exist within the nucleus.
• Calculate the uncertainty in velocity of a cricket ball of mass 0.15 kg if its uncertainty in position is of the order of 1A⁰
• Calculate the uncertainty in velocity of an electron if uncertainty in its position is of the order of 1 A⁰.

Queries asked on Sunday & after 7 pm from Monday to Saturday will be answered after 12 pm the next working day.