1
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
In the reaction $${}_1^2$$H + $${}_1^3$$H $$ \to $$ $${}_2^4$$He + $${}_0^1$$n, if the binding
energies of $${}_1^2$$ H, $${}_1^3$$H and $${}_2^4$$He are respectively a, b and c (in MeV),
then the energy (in MeV) released in this reaction is
A
a + b + c
B
a + b $$-$$ c
C
c $$-$$ a $$-$$ b
D
c + a $$-$$ b
2
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.
3
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.
4
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
$${\lambda _3}^2 = {\lambda _1}^2 + {\lambda _2}^2$$
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