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

Related Mcqs:

1. In addition to the daughter nucleus and an electron or positron, the products of a beta decay

   A. Neutrons
   B. Neutrino
   C. Alpha particle
   D. Proton

   Submitted by: Alina Malik

2. 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

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. 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

5. In the nucleus of uranium, the number of neutrons will be _____________?

   A. 92
   B. 235
   C. 143
   D. Different for different isotopes

6. Average energy required to remove one nucleon from the nucleus is called__________________?

   A. Binding energy per nucleon
   B. Energy of decay
   C. Destruction energy
   D. All of above

7. Sum of the masses of constituent nucleons as compared to the mass of the resultant nucleus is______________?

   A. Smaller
   B. Greater than 82
   C. Same
   D. Sometimes smaller some times greater

8. An alpha particle is emitted from 88Ra226. What is the mass and atomic number of the daughter nucleus ?

   A. 224 – 84
   B. 220 – 80
   C. 222 – 86
   D. 226 – 87

9. Pair production takes place in the vicinity of a heavy nucleus so that_____________?

   A. Net energy is conserved
   B. Net charge is conserved
   C. Net momentum is conserved
   D. All of the above

10. Wave-like characteristic of electron is demonstrated by______________?

    A. Line spectrum of atoms
    B. Production of x-rays.
    C. Diffraction by crystalline solids
    D. Photoelectric effect