Q)
(chatquestion)...(a) 0.12
(b) 0.26
(c) 1.2
O 2016]
(d) 0.37
(Given Planck's constant h= 6.6x10-34 J- s)
7.
Two radioactive nuclei P and Q, in a given sample decay into
a stable nucleus R. At time t=0, number of P species are 4
ition of
18 days
No and that of Q are No . Half-life of P (for conversion to R)
on was
is 1 minute where as that of Q is 2 minutes. Initially there are
for safe
number
no nuclei of R present in the sample. When number of nuclei
of P and Q are equal, the number of nuclei of R present in
safe for
) 2016]
[CBSE PMT (Mains) 2011]
the sample would be
5No
A (a)
(b) 2No
9No
(d)
2.
lo (c) 3No
...
