de-Brogile waves are matter wave. (Yes/No)

de-Brogile waves and e.m. waves are same. (Yes/No)

Write de-Brogile hypothesis for matter wave and find an expression for de- Brogile wavelength.

Show that de-Broglie hypothesis of matter wave supports the Bohr's concept of stationary orbit.

Write de Brogile hypothesis for matter wave and find an expression for de-Broglie wave length.

Find de-Brogile wave length of wave associated with a particle of rest mass 5xx10^(-30) kg and moving with a speed 1.8xx 10^(8) ms^(-1) (h=6.6 xx10^(-34) JS).