(i) Cell phone companies are used non-ionised radiations.
(ii) It is not harmful like X-ray or gamma radiation.
(iii) In 2006 report issued by the WHO, human body absorbs energy from cell phone towers which is almost five times more than FM and Television.
(iv) Signals from each mobile towers travels a few miles from there.
(v) The closer we are the greater the danger.

In alpha decay atomic number decreases by two and mass number decreases by four. So
232 - 208 = 24
Mass number decreased by 24. So 6 alpha particle would come out.
\({ }_{90} \mathrm{X}^{232} \rightarrow{ }_{78} \mathrm{Y}^{208}+6{ }_{2} \mathrm{He}^{4}\)
In beta decay atomic number increases by one
78 + 4 = 82
So, 4 beta particle would come out.
\({ }_{78} \mathrm{Y}^{208} \rightarrow{ }_{82} \mathrm{Z}^{208}+4_{-1} \mathrm{e}^{\mathrm{o}}\)
So, six alpha particle and four beta particles would come out.

Mass defect in the reaction (m) = 2 kg
Velocity of light (c) = 3 × 10⁸ m s^-1 
By Einstein’s equation,
Energy released E = mc²
So  E = 2 × (3 × 10⁸ )² 
= 1.8 × 10¹⁷J

1 Bq = one disintegration per second
one curie = 3.7 × 10¹⁰ Bq
1 Bq = \(\frac { 1 }{ 3.7\times { 10 }^{ 10 } } \) curie
∴ 3.7 x 10³ G Bq = 3.7 x 10³ x 10⁹ x \(\frac { 1 }{ 3.7\times { 10 }^{ 10 } } \)
= 100 curie