If the half-life of a material is 10 yr, then in what time, it becomes 1/4th part

If the half-life of a material is 10 yr, then in what time, it becomes 1/4th part of the initial amount

Options

(a) 15 yr
(b) 20 yr
(c) 25 yr
(d) 30 yr

Correct Answer:

20 yr

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

admin:

Related Questions

  1. A gas of monoatomic hydrogen is bombarded with a stream of electrons
  2. Two sources of sound placed close to each other are emitting progressive waves
  3. Force required to move a mass of 1kg at rest on a horizontal rough plane
  4. If the pressure of gas is increased from 1.01×10⁵ Pa to 1.165×10⁵ Pa and volume
  5. Three resistances 2Ω, 3Ω and 4Ω are connected in parallel. The ratio of currents passing