Question

2) The half-life of radioactive polonium (Po) is 138.6 days.
For ten lakh polonium atoms, the number of
disintegrations in 24 h is
(a) 2000
(b) 3000
(c) 4000
(d) 5000​

Answer 1

Noise pollution, also known as environmental noise or sound pollution, is the propagation of noise with ranging impacts on the activity of human or animal life, most of them harmful to a degree. The source of outdoor noise worldwide is mainly caused by machines, transport, and propagation systems.

Answer 2

Answer:

answer is 5000 please add as brailiest question please