1
COMEDK 2024 Morning Shift
MCQ (Single Correct Answer)
+1
-0

The ratio of the radii of the nucleus of two element $$\mathrm{X}$$ and $$\mathrm{Y}$$ having the mass numbers 232 and 29 is:

A
4 : 1
B
1 : 4
C
1 : 2
D
2 : 1
2
COMEDK 2024 Morning Shift
MCQ (Single Correct Answer)
+1
-0

The closest approach of an alpha particle when it make a head on collision with a gold nucleus is $$10 \times 10^{-14} \mathrm{~m}$$, then the kinetic energy of the alpha particle is :

A
3640 J
B
3.64 J
C
$$ 3.64 \times 10^{-16} \mathrm{~J} $$
D
$$ 3.64 \times 10^{-13} \mathrm{~J} $$
3
COMEDK 2024 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Find the binding energy of the tritium nucleus: [Given: mass of $$1 \mathrm{H}^3=3.01605 \mathrm{~u} ; \mathrm{~m}_{\mathrm{p}}=1.00782 \mathrm{~u} ; \mathrm{~m}_{\mathrm{n}}=1.00866 \mathrm{~u}$$.]

A
8.5 MeV
B
8.5 J
C
0.00909 MeV
D
0.00909 eV
4
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

The mass density of a nucleus varies with mass number $$A$$ as

A
$$\mathop A\limits^o $$
B
$$A^2$$
C
$$\frac{1}{A}$$
D
$$\ln A$$
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