In an electron microscope, we use energetic particles because of______________?

Related Mcqs:

1. In the electron microscope, electric & magnetic fields are used as_______________?

   A. Electromagnetic gun
   B. Source of electromagnetic waves
   C. Deflecting charged particle
   D. Converging source of electrons

2. The Branch of Physics deals with highly energetic ions is called__________?

   A. Elementary articles
   B. Article physics
   C. Ionic physics
   D. Plasma physics

3. 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

4. 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

5. 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

6. Proton electron neutron and a particles have same momentum. Which of them have highest K.E ?

   A. Proton
   B. electron
   C. neutron
   D. a-particle

7. Alpha particles possess greater penetration power than that of beta particles due to its_____________?

   A. Smaller ionization power
   B. Greater ionization power
   C. Neither greater nor smaller ionization power
   D. Same ionization power

8. Final image produced by a compound microscope is_____________?

   A. real and inverted
   B. real and erect
   C. virtual and erect
   D. virtual and inverted

9. Electron moves in the orbit as________________?

   A. Simple vibratory motion
   B. Standing wave motion
   C. Vibratory motion like up and down
   D. S.H.M likes the sound

10. 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