Atoms - Quiz 13

ATOMS QUIZ-13

Dear Readers,

JEE Advanced Physics Syllabus can be referred by the IIT aspirants to get a detailed list of all topics that are important in cracking the entrance examination. JEE Advanced syllabus for Physics has been designed in such a way that it offers very practical and application-based learning to further make it easier for students to understand every concept or topic by correlating it with day-to-day experiences. In comparison to the other two subjects, the syllabus of JEE Advanced for physics is developed in such a way so as to test the deep understanding and application of concepts.

Q1. The wavelength of first line of Lyman series in hydrogen atom is 1216. The wavelength of first line of Lyman series for 10 times ionized sodium atom will be added

•  0.1 Å
•  1000 Å
•  100 Å
•  10 Å

Solution

Q2. An alpha particle of energy 5 MeV is scattered through 180° by a fixed uranium nucleus. The distance of the closest approach is of the order of

•  10^(-15) cm
•  10^(-13) cm
•  10^(-12) cm
•  10^(-19) cm

Solution

Q3. Figure shows the electron energy levels, referred to the ground state (the lowest possible energy) as zero, for five different isolated atoms. Which atom can produce radiation of the shortest wavelength when atoms in the ground state are bombarded with electrons of energy W?

•   A
•  B
•  C
•  D

Solution

Q4. Figure shows Moseley’s plot between √f and Z, where f is the frequency and Z is the atomic number. Three lines A,B and C shown in the graph may represent

•  K_α,K_β and K_γ lines, respectively
•  K_γ,K_β and K_α lines, respectively
•  K_α,L_α and M_α lines, respectively
•  Nothing

Solution

Q5. The ionization energy of the ionized sodium atom Na⁽¹⁰⁺⁾ is:

•  13.6 eV
•  13.6×11 eV
•  (13.6/11) eV
•  13.6×(11² ) eV

Solution

Q6. Determine the maximum wavelength that hydrogen in its ground state can absorb. What would be the next smaller wavelength that would work?

•  133 nm
•  13.3 nm
•  10.3 nm
•  103 nm

Solution

Q7. The longest wavelength that a singly ionised helium atom in its ground state will absorb is

•  912 Å
•  304 Å
•  606 Å
•  1216 Å

Solution

Q8. Let the potential energy of a hydrogen atom in the ground state be zero. Then, its energy in the first excited state will be

•  10.2 eV
•  13.6 eV
•  23.8 eV
•  27.2 eV

Solution

Q9. Which of the following parameters are the same for all hydrogen-like atoms and ions in their ground states?

•  Radius of the orbit
•  Speed of the electron
•  Energy of the atom
•  Orbital angular momentum of the electron

Solution

Q10. The minimum kinetic energy required for ionization of a hydrogen atom is E_1 is case electron is collided with hydrogen atom. It is E₂ if the hydrogen ion is collided and E₃ when helium ion is collided. Then,

•  E₁=E₂=E₃
•  E₁>E₂>E₃
•  E₁ < E₂ < E₃
• E₁ > E₃ > E₂

Solution