IIT-JEE 2007 Paper 1 Offline

MCQ (Single Correct Answer)

-1

In the option given below, let E denote the rest mass energy of a nucleus and n a neutron. The correct option is

$$E\left( {_{92}^{236}U} \right) > E\left( {_{53}^{137}I} \right) + E\left( {_{39}^{97}Y} \right) + 2E(n)$$

$$E\left( {_{92}^{236}U} \right) < E\left( {_{53}^{137}I} \right) + E\left( {_{39}^{97}Y} \right) + 2E(n)$$

$$E\left( {_{92}^{236}U} \right) < E\left( {_{56}^{140}Ba} \right) + E\left( {_{36}^{94}Kr} \right) + 2E(n)$$

$$E\left( {_{92}^{236}U} \right) = E\left( {_{56}^{140}Ba} \right) + E\left( {_{36}^{94}Kr} \right) + 2E(n)$$

IIT-JEE 2007 Paper 1 Offline

MCQ (Single Correct Answer)

-1

The largest wavelength in the ultraviolet region of the hydrogen spectrum is 122 nm. The smallest wavelength in the infrared region of the hydrogen spectrum (to the nearest integer) is

802 nm

823 nm

1882 nm

1648 nm

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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