1
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.
2
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
Energy levels A, B and C of a certain atom corresponding to increasing values of energy i.e. EA < EB < EC. If $$\lambda $$1, $$\lambda $$2 and $$\lambda $$3 are wavelengths of radioations corresponding to transitions C to B, B to A and C to A respectively, which of the following relations is correct?
A
$${\lambda _3} = {\lambda _1} + {\lambda _2}$$
B
$${\lambda _3} = {{{\lambda _1}{\lambda _2}} \over {{\lambda _1} + {\lambda _2}}}$$
C
$${\lambda _1} + {\lambda _2} + {\lambda _3} = 0$$
D
$${\lambda _3}^2 = {\lambda _1}^2 + {\lambda _2}^2$$
3
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
If M(A; Z), Mp and Mn denote the masses of the nucleus $${}_Z^AX,$$ proton and neutron respectively in units of u (1 u = 931.5 MeV/c2) and BE represents its bonding energy in MeV, then
A
M(A, Z) = ZMp + (A $$-$$ Z)Mn $$-$$ BE
B
M(A, Z) = ZMp + (A $$-$$ Z)Mn + BE/c2
C
M(A, Z) = ZMp + (A $$-$$ Z)Mn $$-$$ BE/c2
D
M(A, Z) = ZMp + (A $$-$$ Z)Mn + BE
4
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
A nucleus represented by the symbol $${}_Z^AX$$ has
A
Z neutrons and A $$-$$ Z protons
B
Z protons and A $$-$$ Z neutrons
C
Z protons and A neutrons
D
A protons and Z $$-$$ A neutrons
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