JEE Advanced 2015 Paper 2 Offline

MCQ (More than One Correct Answer)

-2

A fission reaction is given by $$_{92}^{236}U \to _{54}^{140}Xe + _{38}^{94}Sr + x + y$$, where x and y are two particles. Considering $$_{92}^{236}U$$ to be at rest, the kinetic energies of the products are denoted by $${K_{Xe}},{K_{Sr}},{K_x}(2MeV)$$ $$ \text { and } \mathrm{K}_{\mathrm{y}}(2 \mathrm{MeV}) $$, respectively. Let the binding energies per nucleon of $$_{92}^{236}U$$, $$_{54}^{140}Xe$$ and $$_{38}^{94}Sr$$ be 7.5 MeV, 8.5 MeV and 8.5 MeV, respectively. Considering different conservation laws, the correct options is/are

x = n, y = n, K_sr = 129 MeV, K_Xe = 86 MeV

x = p, y = e^$$-$$, K_sr = 129 MeV, K_Xe = 86 MeV

x = p, y = n, K_sr = 129 MeV, K_Xe = 86 MeV

x = n, y = n, K_sr = 86 MeV, K_Xe = 129 MeV

JEE Advanced 2013 Paper 2 Offline

MCQ (More than One Correct Answer)

-2

The radius of the orbit of an electron in a hydrogen-like atom is 4.5a₀, where a₀ is the Bohr radius. Its orbital angular momentum is $${{3h} \over {2\pi }}$$. It is given that h is Planck constant and R is Rydberg constant. The possible wavelength(s), when the atom de-excites, is(are)

$${9 \over {32R}}$$

$${9 \over {16R}}$$

$${9 \over {5R}}$$

$${4 \over {3R}}$$

IIT-JEE 2008 Paper 1 Offline

MCQ (More than One Correct Answer)

-2

Assume that the nuclear binding energy per nucleon (B/A) versus mass number (A) is as shown in the figure. Use this plot to choose the correct choice(s) given below.

IIT-JEE 2008 Paper 1 Offline Physics - Atoms and Nuclei Question 7 English

Fusion of two nuclei with mass number lying in the range of 1 < A < 50 will release energy

Fusion of two nuclei with mass numbers lying in the range of 51 < A < 100 will release energy

Fission of a nucleus lying in the mass range of 100 < A < 200 will release energy when broken into two equal fragments

Fission of a nucleus lying in the mass range of 200 < A < 260 will release energy when broken into two equal fragments

JEE Advanced Subjects