Advertisements
Advertisements
Question
A radioactive element is placed in an evacuated chamber. Then the rate of radioactive decay will ______.
Options
Decrease
Increase
Remain unchanged
Depend on the surrounding temperature
Advertisements
Solution
A radioactive element is placed in an evacuated chamber. Then the rate of radioactive decay will remain unchanged.
Explanation:
The properties of the atom's nucleus, not external factors, determine an element's rate of radioactive decay.
APPEARS IN
RELATED QUESTIONS
Answer the following questions based on a hot cathode ray tube.
What will happen to the beam when it passes through the electric field?
In a cathode ray tube, what is the function of anode?
What is thermionic emission?
In following fig. shows a mixed source S of alpha and beta particles in a thick lead container. The particles pass through a magnetic field in a direction perpendicular to the plane of paper (inwards as shown by x). State and show in the diagram how the particles get affected.
Explain the use of radioactive in the field of medicine, agriculture and industry.
Which part of the atom undergoes a change in the process of radioactive decay?
The activity of a certain radionuclide decreases to 15 percent of its original value in 10 days. What is its half life?
[ln (0.15) = -1.9]
In the following atoms, which one is a radioisotope? Give one use of this isotope.
O16, C14, N14, He4
Assertion (A): The force of repulsion between atomic nucleus and α-particle varies with distance according to inverse square law.
Reason (R): Rutherford did α-particles scattering experiment.
