The time in which activity of an element is reduced to 90% of its original value is (given `t""_(1//2)=1.4xx10""^(10)yr`)

The half life period of an radioactive element is 1.4 xx 10 ^(10) years. The time in which the activity of the element is raduced to 90% of its original value is :

The half-life period of a radioactive element is 1.4 xx 10^(10) years. Calculate the time in which the activity of the element is reduced to 90% of its original value.

A radioactive isotope has a half-life of T years. After how much time is its activity reduced to 6.25% of its original activity ? Given T _(1//2)=T

The activity of a radioactive element reduces to (1//16)th of its original value in 30 years. Find its half life?

The activity of a radioactive element reduces to (1//16)th of its original value in 30 years. Find its half life?

A radioactive sample has a half-life of 20 years. The time at which the activity of the sample will reduce to 10% of its initial value is

The magnetic flux through a coil is 4 xx 10^(-4) Wb//m^(2) at time t=0 . It reduces to 10% of its original value in 't' seconds. If the induceds e.m.f. Is 0.72 mV, then the time t is

Magnetic flux passing through a coil is initially 4xx 10^-4 Wb. It reduces to 10% of its original value in t second. If the emf induced is 0.72 mV then t in second is