1
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
The total energy of an electron in the first excited state of hydrogen atom is about $$-$$ 3.4 eV. Its kinetic energy in this state is
A
3.4 eV
B
6.8 eV
C
$$-$$ 3.4 eV
D
$$-$$ 6.8 eV
2
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Which one of the following pairs of nuclei are isotones ?
A
34Se74,  31Ga71
B
38Sr84,  38Sr86
C
42Mo92,   40Zr92
D
20Ca40,  16S32
3
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
In any fission process the ratio
mass of fission products
mass of parent nucleus
is
A
equal to 1
B
greater than 1
C
less than 1
D
depends on the mass of the parent nucleus.
4
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
Fission of nuclei is possible because the binding energy per nucleon in them
A
increases with mass number at low mass numbers
B
decreases with mass number at low mass numbers
C
increases with mass number at high mass numbers
D
decreases with mass number at high mass numbers.
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