Half-life is the time taken for \(\underline {\hspace {3.5cm}}\).
(A)
The radioactive element to completely decay
(B)
The activity of a radioactive substance to be halved from the original activity
(C)
The volume of a radioactive substance to be halved
(D)
The electrons to be released from the nucleus of a radioactive element
Source: Trial SPM Pahang 2019
Spontaneous and random radiations of radiation that occur spontaneously from unstable sources.
The above statement refers to the definition of \(\underline {\hspace {3.5cm}}\).
Which statement is correct about the nucleus of an atom?
The nucleus is surrounded by protons
The nucleus is the lightest part of an atom
The nucleus consists of proton and neutron
The nucleus consists of proton and electron
Source: SPM 2015
Which of the following is radioactive radiation?
I
Alpha particles (\(\alpha\))
II
Sigma particles (\(\sigma\))
III
Beta particles (\(\beta\))
IV
Gamma rays (\(\gamma\))
The diagram shows a symbol of radioactive radiation.
Which of the following is a true characteristic of the radioactive radiation?
There is something wrong with this question.
