A radioactive element gets spilled over the floor of a room. Its half life period is 30 days. If its initial activity is ten times the permissible value, after how many days will it be safe to enter the room?

A radioactive element gets spilled over the floor of a room. Its half life period is 30 days. If the initial activity is ten times the permissibel value, after how many days will it be safe to enter the room?

A radioactive element gets spilled over the floor of a room. Its half-life period is 30 days. If the initial activity is ten times the permissible value, after how many days will it be safe to enter the room ?

A radioactive element gets spilled over the floor of a room. Its half-life period is 30 days. If the initial activity is ten times the permissible value, after how many days will it be safe to enter the room ?

A radioactive element gets spilled over the floor of a room, Its half-life period is 30 days. If the initial activity is 10 times the permissible value, after how many days will it be safe to enter the room ?

Radioactive elements is spread over a room, its half life is 30 day, Its activity is 50 times the permissible value. After how many days will it be safe?

An accident in a laboratory deposits some amount of radioactive material of half-life 20d on the floor and the walls. Testing reveals that the level of radiation is 32 times the maximum permissible level. After how many days will it be safe to use the room?

A certain element has half life period of 30 days. Find its average life

A certain element has half life period of 30 days. Find its average life

A certain element has half life period of 30 days. Find its average life