Assignmement

1.     Which one of the following is a direct consequence of Lorentz transformation of coordinates?    

• Velocity of light is a fundamental constant of nature

• Two events may be simultaneous in one frame but may not be simultaneous in a frame moving relative to the first frame

•   A mass less particle moves with c

• Special relativity is a classical theory of spacetime

In the quark model, the quark content of K^-

          

• us-bar 

• su-bar

• ud-bar

• uud

Photoelectric effect involves                                                                                     

           

          

           

          

• photon interaction with a “bound electron”

• photon interaction with a “free electron”

• photon interaction with the electromagnetic  field of a nucleus.

• photon interaction with crystal lattice

Four charges (two +q and two -q) are kept fixed at the four vertices of a square of side a as shown in figure. At the point P which is at a distance R from the centre (R>>A), the potential is proportional to        

                                                                                      

• 1/R

1. The binding energy per nucleon is of the order of

     

• 10 MeV

• 0.1 MeV

• 0.01 MeV

• 100 MeV

De Broglie equation

• relates the momentum of a mass to its wavelength

• relates the energy of a mass to its wavelength

• relates the frequency of a mass to its wavelength

• relates the work function of a mass to its wavelength

If waves can behave like particles, then particles can behave like a wave. This is the idea behind...

• Quantization of Energy

• Photoelectric Effect

• Compton Effect

• deBroglie Waves

• Uncertainty Principle

The energy of a particle trapped inside an infinite deep potential well is 8 eV. If the width of the well is halved then it's energy becomes

• 2 eV

• 4 eV

• 16 eV

• 32 eV

Name the scientist who created an equation to treat the electron as a wave

• Planck

• Heisenberg

• de Broglie

• Schrodinger