1
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The half life of radian is about 1600 years. Of 100 g of radium existing now, 25 g will remain unchanged after
2
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
In which of the following systems will the radius of the first orbit (n = 1) be minimum ?
3
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
The mass of proton is 1.0073 u and that of neutron is 1.0087 u (u = atomic mass unit). The binding energy of $${}_2^4$$ He is
(Given helium nucleus mass $$ \approx $$ 4.0015 u.)
(Given helium nucleus mass $$ \approx $$ 4.0015 u.)
4
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The mass number of a nucleus is
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