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1
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
The energy of hydrogen atom in nth orbit is En then the energy in nth orbit of singly ionised helium atom will be
A
4En
B
En/4
C
2En
D
En/2
2
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
Maximum frequency of emission is obtained for the transition
A
n = 2 to n = 1
B
n = 6 to n = 2
C
n = 1 to n = 2
D
n = 2 to n = 6.
3
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The life span of atomic hydrogen is
A
fraction of one second
B
one year
C
one hour
D
one day
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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