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1
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Half life of a radioactive element is 12.5 hour and its quantity is 256 g. After how much time its quantity will remain 1 g?
A
50 hrs
B
100 hrs
C
150 hrs
D
200 hrs
2
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
X(n, $$\alpha $$) $${}_3^7$$Li, then X will be
A
$${}_5^{10}$$ B
B
$${}_5^9$$ B
C
$${}_5^{11}$$ Be
D
$${}_2^4$$ He.
3
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Which rays contain (positive) charged particles ?
A
$$\alpha $$-rays
B
$$\beta $$-rays
C
$$\gamma $$-rays
D
X-rays
4
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The relation between $$\lambda $$ and T1/2 as (T1/2 $$ \to $$ half life)
A
T1/2 = $${{\ln 2} \over \lambda }$$
B
T1/2 ln2 = $$\lambda $$
C
T1/2 = $${1 \over \lambda }$$
D
($$\lambda $$ + T1/2) = ln2
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