At a given instant, say t = 0, two radioactive substance A and B have equal activities. the ratio R B /R A of their activities after time t itself decays with time t as e⁻³t. If the half-life of A is ln², the half-life of B is:

Atoms and Nuclei: JEE Main 2019 Physics question

JEE Main 2019 · 9 Jan, Evening shift · Q6094

JEE Main 20199 Jan, Evening shiftPhysicsHardAtoms and Nuclei183× since 2002

At a given instant, say t = 0, two radioactive substance A and B have equal activities. the ratio

{{{R_B}} \over {{R_A}}}

of their activities after time t itself decays with time t as e^

-

3t. If the half-life of A is ln², the half-life of B is :

JEE Main 2019 Atoms and Nuclei Question with Solution (9 Jan Evening shift, Q6094) | JEE Arc

JEE Main 2019 · 9 Jan, Evening shift · Q6094

JEE Main 20199 Jan, Evening shiftPhysicsHardAtoms and Nuclei183× since 2002

At a given instant, say t = 0, two radioactive substance A and B have equal activities. the ratio

{{{R_B}} \over {{R_A}}}

of their activities after time t itself decays with time t as e^

-

3t. If the half-life of A is ln², the half-life of B is :