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A radioactive substance emits |
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(a) |
alpha particle |
(b) |
beta particle |
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|
(c) |
gamma particle |
(d) |
all of the three |
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|
A radioactive substance emits |
|
|||
|
(a) |
alpha particle |
(b) |
beta particle |
|
|
(c) |
gamma particle |
(d) |
all of the three |
|