Question:
If 10% of a radioactive material decays in 10 days the percentage of the material that decays in 20 days is
If 10% of a radioactive material decays in 10 days the percentage of the material that decays in 20 days is
Updated On: Jun 8, 2024
- 0.2
- 0.41
- 0.81
- 0.19
Hide Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Answer (d) 19%
Was this answer helpful?
0
0
Top Questions on deccay rate
- Radioactive material $'A'$ has decay constant $' 8 \lambda '$ and material $'B' $ has decay constant $'\lambda'$ Initially they have same number of nuclei. After what time, the ration of number of nuclei of material of material $'B' $ to that $'A'$ will be $\frac{1}{e} ?$
- NEET (UG) - 2017
- Physics
- deccay rate
- The half-life of a radioactive substance is $10$ days. This means that
- AIIMS - 2013
- Physics
- deccay rate
- 1 curie is
- AIIMS - 2013
- Physics
- deccay rate
- The half-life of a radioactive element is $10 \,h$. The fraction of initial radioactivity of the element that will remain after $40\, h$ is
- EAMCET - 2012
- Physics
- deccay rate
- The half-life of $Ra ^{226}$ is 1620 years. Then the number of atoms decay in one second in $1 g$ of radium (Avogadro number $\left.=6.023 \times 10^{23}\right)$
- EAMCET - 2012
- Physics
- deccay rate
View More Questions
Questions Asked in KEAM exam
- Benzene when treated with Br\(_2\) in the presence of FeBr\(_3\), gives 1,4-dibromobenzene and 1,2-dibromobenzene. Which type of reaction is this?
- KEAM - 2025
- Haloalkanes and Haloarenes
- 10 g of (90 percent pure) \( \text{CaCO}_3 \), treated with excess of HCl, gives what mass of \( \text{CO}_2 \)?
- KEAM - 2025
- Stoichiometry and Stoichiometric Calculations
- Evaluate the following limit: $ \lim_{x \to 0} \frac{1 + \cos(4x)}{\tan(x)} $
- KEAM - 2025
- Limits
- Given that \( \mathbf{a} \times (2\hat{i} + 3\hat{j} + 4\hat{k}) = (2\hat{i} + 3\hat{j} + 4\hat{k}) \times \mathbf{b} \), \( |\mathbf{a} + \mathbf{b}| = \sqrt{29} \), \( \mathbf{a} \cdot \mathbf{b} = ? \)
- KEAM - 2025
- Vector Algebra
- In an equilateral triangle with each side having resistance \( R \), what is the effective resistance between two sides?
- KEAM - 2025
- Combination of Resistors - Series and Parallel
View More Questions
Concepts Used:
Decay Rate
The disintegration of unstable heavy atomic nuclei into lighter, more stable, atomic nuclei, accompanied in the process by the emission of ionizing radiation (alpha particles, beta particles or gamma rays). This is a random process at the atomic level but, given a large number of similar atoms, the decay rate on average is predictable, and is usually measured by the half-life of the substance.
The equation for finding out the decay rate is given below:
