Half life of a radioactive substance is $T$. The time taken for all the nuclei to disintegrate will be
$2T$
$T^2$
$4T$
$Uncertain$
(d) Uncertain, because it is infinite.
No radioactive element can be disintegrated fully.
Which of the following statements are true regarding radioactivity
$(I)$ All radioactive elements decay exponentially with time
$(II)$ Half life time of a radioactive element is time required for one half of the radioactive atoms to disintegrate
$(III)$ Age of earth can be determined with the help of radioactive dating
$(IV)$ Half life time of a radioactive element is $50\%$ of its average life periodSelect correct answer using the codes given belowCodes :
Activity of a radioactive sample decreases to $(1/3)^{rd}$ of its original value in $3\, days$. Then, in $9\, days$ its activity will become
Radioactive nuclei that are injected into a patient collect at certain sites within its body, undergoing radioactive decay and emitting electromagnetic radiation. These radiations can then be recorded by a detector. This procedure provides an important diagnostic tool called
A radioactive element has half life period $800$ years. After $6400$ years what amount will remain?
Confusing about what to choose? Our team will schedule a demo shortly.
