Can a radioactive sample emit all types of radiations at the same time ?

In a freshly prepared radioactive sample the rate of radiation is 64 times greater than the safe limit. If its half -life be 2 h then using this sample experiments can be performed with safely after

A mixture of radioactive substances gives off three types of radiations : Name the radiation which travels with the speed of light

A mixture of radioactive substances gives off three types of radiations : Name the radiation which has the highest ionizing power.

A freshly prepared radioactive sample of half life 1 hour emits radiations that are 128 times as intense as the impossible safe limit. The minimum time after which this sample can be safely used is

If one of the radioactive atoms emits radiation at time 't' minutes, then the next nuclei emits radiation after _________.

A radioactive substance emits radiations :

What is natural radioactivity ? What type of radiations are emitted ? Write two properties of each one.

A radioactive sample is emitting 64 times radiations than non hazardous limit. if its half life is 2 hours, after what time it becomes non-hazardous: