Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) A mixture consists of two radioactive materials `A_1 and A_2` with half lives of 20s and 10s respectively. Initially the mixture has 40g of `A_1`and 160 g of `A_2` .The amount of the two in the mixture will become equal after - Sarthaks eConnect

A mixture consists of two radioactive materials `A_1 and A_2` with half lives of 20s and 10s respectively. Initially the mixture has 40g of `A_1`and 160 g of `A_2` .The amount of the two in the mixture will become equal after

20 s

40 s

60 s

80 s