Half life of radioactive substance is 3.20 h. What is the time taken for 75% substance to be used?
The half life of radioactive substance is T. Then the fraction of the substance that has decayed in time t is-
The radioactivity of a sample is l_(1) at a time t_(1) and l_(2) time t_(2) . If the half-life of the sample is tau_(1//2) , then the number of nuclei that have disintegrated in the time t_(2)-t_(1) is proportional to
If N_(0) is the original mass of the substance of half - life period t_(1//2) = 5 year then the amount of substance left after 15 year is
Decay constant of a radioactive substance is 69.3 sec^(-1) , find t_(1//16) of the same substance.
If 5 g of a radioactive substance has t_(1//2) = 14 h, 10 g of the same substance will have t_(1//2) equal to
The quantity of heat which can rise the temperature of x gm of a substance through t_(1)^@ C can rise the temperature of y gm of water through t_(2)^@C is same. The ratio of specific heats of the substances is
There are two substances A and B The mass of substance B is found tobe 3 times the mass of substance A, but the volume of substance A is 1/9 th the volume of substance B. Which of the two substances possesses greater density?
