A radioactive isotope has a half-life of 10 years. How long will it take for the activity to reduce to 3.125 %?
A0 = 100
At = 3.125
At = A0.e-λt
In gamma-ray emission from a nucleus
When 3Li7 nuclei are bombarded by protons, and the resultant nuclei are 4Be8 , the emitted particles will be
The ‘rad’ is the correct unit used to report the measurement of
A photocell is illuminated by a small bright source placed 1 m away. When the same source of light is placed 1 /2 m away, the number of electrons emitted by photocathode would
Mock Test Series
