IIT-JEE 2006 | Atoms and Nuclei Question 57 | Physics

IIT-JEE 2006

MCQ (Single Correct Answer)

-0

$$ \text { Match the following Columns. } $$

Column I		Column II
(A)	Nuclear fusion.	(P)	Converts some matter into energy.
(B)	Nuclear fission.	(Q)	Generally possible for nuclei with low atomic number.
(C)	$\beta$-decay.	(R)	Generally possible for nuclei with higher atomic number.
(D)	Exothermic nuclear reaction.	(S)	Essentially proceeds by weak nuclear forces.

$$ [\mathrm{A} \rightarrow( \mathrm{Q}) ; \mathrm{B} \rightarrow(\mathrm{P}, \mathrm{R}) ; \mathrm{C} \rightarrow(\mathbf{P}, \mathbf{S}) ; \mathbf{D} \rightarrow( \mathbf{R})] $$

$$ [\mathrm{A} \rightarrow(\mathrm{P}) ; \mathrm{B} \rightarrow(\mathrm{P}, \mathrm{R}) ; \mathrm{C} \rightarrow(\mathbf{P}) ; \mathbf{D} \rightarrow(\mathbf{P}, \mathbf{Q}, \mathbf{R})] . $$

$$ [\mathrm{A} \rightarrow(\mathrm{P}, \mathrm{Q}) ; \mathrm{B} \rightarrow(\mathrm{P}, \mathrm{R}) ; \mathrm{C} \rightarrow(\mathbf{P}, \mathbf{S}) ; \mathbf{D} \rightarrow(\mathbf{P}, \mathbf{Q}, \mathbf{R})] . $$

$$ [\mathrm{A} \rightarrow(\mathrm{P}, \mathrm{Q}) ; \mathrm{B} \rightarrow(\mathrm{P}, \mathrm{R}) ; \mathrm{C} \rightarrow( \mathbf{S}) ; \mathbf{D} \rightarrow(\mathbf{P}, \mathbf{Q})] . $$

IIT-JEE 2005 Mains

MCQ (Single Correct Answer)

-1

Highly energetic electrons are bombarded on a target of an element containing 30 neutrons. The ratio of radii of nucleus to that of Helium nucleus is $$(14)^{\frac{1}{3}}$$. Find

(A) Atomic number of the nucleus;

(B) the frequency of $$\mathrm{K}_{\alpha}$$ line of the X-ray produced.

$$\left(\mathrm{R}=1.1 \times 10^{7} \mathrm{~m}^{-1}\right.$$ and $$\left.c=3 \times 10^{8} \mathrm{~m} / \mathrm{s}\right)$$

(A) 26 ; (B) $$2.55 \times 10^{18} \mathrm{~Hz}$$

(A) 26 ; (B) $$1.55 \times 10^{18} \mathrm{~Hz}$$

(A) 36 ; (B) $$1.55 \times 10^{18} \mathrm{~Hz}$$

(A) 46 ; (B) $$2.55 \times 10^{18} \mathrm{~Hz}$$

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