Wave-like characteristic of electron is demonstrated by______________?

Related Mcqs:

1. When an electron moving with a uniform speed in a vacuum enters a magnetic field in a direction perpendicular to the field the subsequent path of the electron is ___________________?

   A. a straight line parallel to the field
   B. a parabola in a plane perpendicular to the field
   C. a circle in a plane perpendicular to the field
   D. a straight line along its initial direction

2. For confinement of electron in a box of radius 10-14m the electron, speed should be_____________?

   A. 107m/sec
   B. Should be greater than the speed of light.
   C. Be zero
   D. Not be wave-like

3. In bringing an electron towards the second electron, the electrostatic potential energy of the system

   A. Decreases
   B. increases
   C. remains the same
   D. becomes zero

   Submitted by: Tauseef Ali

4. When crest of one wave falls over the trough of the other wave this phenomenon is known as________________?

   A. polarization
   B. constructive interference
   C. destructive interference
   D. diffraction

5. In a half-wave rectifier the r.m.s. value of the A.C. component of the wave is________________?

   A. Equal to D.C. value
   B. More than D.C. value
   C. Less than D.C. value
   D. Zero

6. Ratio of the weight of H-atom to that of an electron is approximately______________?

   A. 18.336
   B. 1836
   C. 18360
   D. 183.6

7. The electric P.E of an electron in an orbit at a distance rn from the positive charge_____________?

   A. Ke2/rn
   B. Ke2/rn2
   C. ÀKe2/rn
   D. ÀKe2/rn2

8. Bracket series is obtained when all transition of electron terminate on_______________?

   A. 4th orbit
   B. 5th orbit
   C. 3rd orbit
   D. 2nd orbit

9. Electron cannot exist in the nucleus it is confirmed by observing that______________?

   A. It does emit radiation
   B. Its size as compare to proton and neutron is very small
   C. No antiparticle of electron is present
   D. The velocity of electron must be very high according to uncertainty principle

10. An electron enters a region where the electric field E is perpendicular to the magnetic field B. It will suffer no deflection if_________________?

    A. E = BeV
    B. B = eE/V
    C. E = BV
    D. E = BeV/2