ENTRANCE TEST – 2008 :: Discussion


3.Beta ray emitted by a radioactive substance is:
A. An electron which was existing outside the nucleus
B.An electron which was existing inside the nucleus.
C. An electron emitted by the nucleus as a result of the decay of neutron inside the nucleus.
D. A pulse of electromagnetic wave.
Answer:  Option  B
Explanation:

Tutorial Link:
Published by:Nimra Saeed

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