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

Related Mcqs:

1. 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

2. 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

3. 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

4. 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

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. Radioactive decay obeys which one of the following law ?

   A. N=Noe-λt
   B. N=Noeλt
   C. N=Noe-λt/2
   D. No=N(1+eλt)

7. The penetration power of alpha particle as compared to beta particle is_______________?

   A. 10 times more
   B. 100 times more
   C. 100 times less
   D. 10 times less

8. The charge on beta particle is________________?

   A. 1
   B. -1
   C. +2
   D. -2

9. Beta particles ionize an atom_________________?

   A. Due to the electrostatic force of attraction
   B. Due to the electrostatic force of repulsion
   C. Due to a direct collision
   D. Due to the gravitational force

10. 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