Which of the following "is"//"are" correct? a)`alpha`-rays are more penetrating then `beta`-rays. b)`alpha`-rays have greater ionizing power than `beta`-rays. c)`beta`-particles are not present in the elements, yet they are emitted from the nucleus. d)`alpha`-rays are not emitted simultaneously with `alpha`- and `beta`-rays.

Options

A. `alpha` rays are more penetrating then `beta`-rays
B. `alpha`-rays have greater ionizing power then `beta`-rays
C. `beta`particle are not present in the nucleus, yet they are emitted from the nucleus.
D. `gamma`-rays are not emitted simultaneously with `alpha` and `beta`-rays

Answer

b,c,d