Related Questions

Radioactive decay of a material involves a __________ order reaction.
A Third
B Second
C First
D Zero
A radioactive isotope undergoes decay with respect to time following __________ law.
A logarithmic
B exponential
C inverse square
D linear
Radioactive decay is a __________ change.
A Chemical
B Nuclear
C Physical
D None of these
The time required for half of the __________ of a radioactive isotope to decay is called its half life.
A Nuclei
B Electrons
C Protons
D Neutrons
Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.
A Atoms
B Neutrons
C Nucleons
D Electrons
কোনটি তেজস্ক্রিয়তার ক্ষয়সূত্র (law of radioactive decay)?
A N==N0e-t
B   N =N0e-λt/t
C  N=N0e-λt 
D      N=N0e-t/t
Half life of a radioactive isotope corresponds to the time required for half of the following to decay
A Electrons
B Protons
C Neutrons
D Atom
Emission of β-particles during radioactive decay of a substance is from
A Innermost shell
B Nucleus
C Outermost shell
D None of these
In β-decay of radioactive material, the ratio of neutron to proton
A Increases
B Remains same
C Decreases
D Is unpredictable; may increase or decrease
240 radioactive grams of goo loses half its radioactivity every 10 days. How many grams of radioactive goo is left in 40 days?
A 120
B 60
C 15
D none

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