basic quantum physics

wave nature of particles was first proposed by _____.

• Gerhard Herzberg

• Erwin Schrodinger

• L ouis de Broglie

• G.P.Thompson

Wave nature of particles were first verified directly by____.

• Rutherford

• de Broglie

• Thomas Yung

• Davisson and Germer

Which principle sets limit to the best we can possibly do in an experiment to measure simultaneously the location and momentum of a particle.

• de Broglie

• Schorodinger

• exclusion

• uncertainty

---- velocity of particle waves is equal to the particle velocity.

• phase

• group

• twice group

• twice phase

In the case matter waves the parameter that is changing is

• probability

• probability amplitude

• probability density

• particle velocity

the wavelength and kinetic energy of a particle are related by the equation

• $\lambda=\frac{h}{2mE}$

• $\lambda=\frac{h}{\sqrt{2mE}}$

• $\lambda=\frac{h}{E}$

• $\lambda=\frac{h}{E}$

Bragg's equation in particle/light diffraction by crystals is

• $2d\ \sin\theta=n\lambda$

• $2d^2\sin\theta=\ n\lambda$

• $2d\sin\theta=\lambda$

• none of these

Because of the smallness of the term __, wave nature of very small particles only have significance.

• mass

• speed

• size

• plank's constant

The first experiment to verify wave nature of particles employed a beam of _____.

• He nuclei

• neutrons

• electrons

• photons

whose experiment proved the wave nature of light for the first time in1801.

• Davisson and Germer

• Clifford Shull

• Thomas Young

• William Bragg