Modern Physics ...

During β – emission an electron is ejected from the atom of radioactive substance. The electron is ejected from:

The atoms of same element having same atomic number, but different atomic masses are called:

A radioactive nucleus emits a certain type of radiation. A particle with the same mass as before but an increased atomic number of one is emitted. Determine the particle’s identity.

The least penetrating radiation is:

An alpha particle gains two electrons. In doing so, it changes to:

When an element gives out high energy radiations on its own, the change which takes place is:

Which of the following radiation gets deflected most in an electric or magnetic field?

By emitting an electron, a neutron may change into a ____________.

The speed of γ– radiations is about:

Three types of radioactive elements are emitted when unstable nuclei undergo radioactive decay. Which of the following is not one of them?

The radiation suffering the maximum deflection in a magnetic field is:

Which of the following is correct ascending order of speed of the given particles?

The atomic number (Z) of any element means

The number of protons or atomic number is reduced to 2 by which form of radioactive decay?

The atomic number is not changed by which type of radioactive decay?