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प्रश्न
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उत्तर
संबंधित प्रश्न
State three safety precautions that you would take while handling the radioactive substances.
State two properties that a substance should possess when used as a thermionic emitter.
State any two uses of cathode rays.
In a cathode ray tube state. How is it possible to increase the rate of emission of electrons.
Name the three main parts of a Cathode Ray Tube.
It is advised not to touch a radioactive substance by hand. Give reason.
A radioactive material decays by simultaneous emissions of two particles with half-lives of 1400 years and 700 years respectively. What will be the time after which one-third of the material remains? (Take In3 = 1.1)
Calculate the time interval between 33% decay and 67% decay if half-life of a substance is 20 minutes.
A radioactive element is placed in an evacuated chamber. Then the rate of radioactive decay will ______.
