After 280 days, the activity of a radioactive sample is 6000 dps. The activity reduces to 3000 dps after another 140 days. The initial activity of the sample in dps is

After 280 days, the activity of a radioactive sample is 6000 dps. The activity reduces to 3000 dps after another 140 days. Find the initial activity of the sample in dps.

After 225 days the activity of a sample is 4000 decay/s. The activity reduces to 2000 decay/s after another 75 days. The initial activity of the sample is

After 225 days the activity of a sample is 4000 decay/s. The activity reduces to 2000 decay/s after another 75 days. The initial activity of the sample is

After 300 days, the activity of a radioactive sample is 5000 dps (disintegrations per sec). The activity become 2500 dps after another 150 days. The initial activity of the sample in dps is

After 300 days, the activity of a radioactive sample is 5000 dps (disintegrations per sec). The activity becomes 2500 dps after another 150 days. The initial activity of the sample in dps is

After 300 days, the activity of a radioactive sample is 5000 dps (disintegrations per sec). The activity becomes 2500 dps after another 150 days. The initial activity of the sample in dps is

The activity of a radioactive sample is independent of

After 200 days the activity of a radioactive sample reduces to 8000 dps. After another 100 days the activity reduces to 8000/sqrt(2) dps. It can be said that:

If the mass of a radioactive sample is doubled, the activity of the sample