Indian Forest Service Physics Paper II 2024 Question Paper PDF

Central Government Jobs Other Jobs 2024

  • Year 2024
  • Conducted By UPSC
  • Maximum Marks 200
  • Duration Three Hours
  • Languages English

Exam Details

Detail Information
Examination Indian Forest Service (Main) Examination
Year 2024
Conducting Body UPSC
Paper Physics Paper - II
Subject Physics
Duration Three Hours
Maximum Marks 200
Question Type Descriptive / Subjective

This is the Physics Paper II from the Indian Forest Service (Main) Examination conducted by UPSC in 2024. The paper is descriptive in nature and covers various topics within Physics. Aspirants preparing for the IFS exam can use this paper to understand the exam pattern, question types, and the depth of knowledge required. The paper consists of eight questions, out of which five are to be attempted, with specific compulsory questions and sectional requirements. This resource is valuable for gauging preparation levels and strategizing for the examination.

Major Topics Covered

  • Physics
  • Uncertainty Principle
  • Relativistic Particle
  • Angular Momentum
  • Molecular Vibrations
  • Harmonic Oscillator
  • Spin
  • Molecular Hydrogen Formation
  • Stern-Gerlach Experiment

Why This Paper is Important

  • Useful for Indian Forest Service (Main) Examination preparation
  • Helps understand the latest exam pattern
  • Useful for practice and self-assessment
  • Covers frequently asked General Studies topics
  • Helpful for analysing question trends

Related Resources

  • Indian Forest Service (Main) Examination 2024 Physics Paper - I
  • Indian Forest Service (Main) Examination 2023 Physics Paper - II
  • Civil Services Examination 2024 Physics Optional Paper
  • Indian Forest Service (Main) Examination 2024 Physics Paper - II Answer Key
  • Indian Forest Service (Main) Examination Physics Syllabus
  • UPSC Physics Optional Subject Syllabus
  • Indian Forest Service (Main) Examination Pattern
  • UPSC Exam Pattern for Main Examinations

Instructions

  • There are EIGHT questions in all, out of which FIVE are to be attempted.
  • Out of the remaining SIX questions, THREE are to be attempted selecting at least ONE question from each of the two Sections A and B.
  • Attempts of questions shall be counted in sequential order.
  • Unless struck off, attempt of a question shall be counted even if attempted partly.
  • Any page or portion of the page left blank in the Question-cum-Answer Booklet must be clearly struck off.
  • The number of marks carried by a question/part is indicated against it.
  • Answers must be written in ENGLISH only.
  • Unless otherwise mentioned, symbols and notations have their usual standard meanings.
  • Assume suitable data, if necessary, and indicate the same clearly.
  • Neat sketches may be drawn, wherever required.
  • Useful Constants: = 1.673 \times 10^{-27} kg Mass of proton = 1.675 \times 10^{-27} kg Mass of neutron = 9.11 \times 10^{-31} kg Mass of electron = 6.626 \times 10^{-34} J s Planck constant Boltzmann constant = 1.380 \times 10^{-23} J K-1 = 9.273 \times 10^{-24} A m2 Bohr magneton (\mu_B) = 5.051 \times 10^{-27} J T-1 (A m2) Nuclear magneton (\mu_N) = 1.602 \times 10^{-19} C Electronic charge = 1.660 \times 10^{-27} kg Atomic mass unit (u) = 931 MeV g_s^p = 5.5855 \mu_N m(p) = 1.00727 \text{ u} m(^{4}_{2}He) = 4.002603 u m(n) = 1.00866 \text{ u} m(^{12}_{6}C) = 12.00000 \text{ u} m(^{87}_{38}Sr) = 86.908893 u m(^{2}_{1}H) = 2.014022 u m(^{3}_{1}H) = 3.0160500 u \varepsilon_0 = 8.85 \times 10^{-12} Fm-1 m(^{16}_{8}O) = 15.999 u = 1.05 \times 10^{-34} J s ħ = 197 eV nm ħс

Questions (page 2)

Section A

Q1. (a) Determine the size of the hydrogen atom using uncertainty principle. Given that the potential energy of electron V = (-e2)/(4π\varepsilon0 a), where a is the distance of the electron from the nucleus. (b) Calculate the group and phase velocities for the wave packet corresponding to a relativistic particle. (c) Calculate [Jx2, Jy], [Jz2, Jy] and [J2, Jy], and then show that \langle J, m | Jx2 | J, m \rangle = \langle J, m | Jy2 | J, m \rangle. (d) Calculate the possible angles between \vecL and \vecS for a d-electron in one-electron atom. (e) The force constant of the bond in CO molecule is 1900 N m-1. Calculate the energy of the lowest vibrational level. The reduced mass of CO molecule is 1.14 × 10-26 kg. Given h = 6.63 × 10-34 J s and 1 eV = 1.6 × 10-19 J.

(b) a relativistic particle. 8 Calculate [Jx^2, Jy], [Jz^2, Jy] and [J2, Jy], and then show that

(c) \langle J, m | Jx2 | J, m \rangle = \langle J, m | Jy2 | J, m \rangle 8 Calculate the possible angles between \vecL and \vecS for a d-electron in one-electron

(d) atom. 8 The force constant of the bond in CO molecule is 1900 N m^{-1}. Calculate the

(e) energy of the lowest vibrational level. The reduced mass of CO molecule is 1.14 × 10-26 kg. Given h = 6.63 × 10-34 J s and 1 eV = 1.6 × 10-19 J. 8 Consider a particle of mass m and charge q moving under the influence of 2.

(a) an oven heated to a temperature of 400 K passes through a magnetic field of length 1 m and having a gradient of T/m perpendicular to the beam. Calculate the transverse deflection of an atom of the beam at a point where the beam leaves the field. The value of Bohr magneton μ_B is 9.27 × 10-24 A m2 and the Boltzmann constant k is 1.38 × 10-23 J/K. JBNV-B-PHYS/49 \overlinea

Section A

Q2. (a) Consider a particle of mass m and charge q moving under the influence of a one-dimensional harmonic oscillator potential. Assume that it is placed in a constant electric field E. The Hamiltonian of this particle is therefore given by H = (p2)/(2m) + 1/2mω^2 x2 - qEx. Derive the energy expression and wave function of the nth excited state. (b) Find the energy levels of a spin S = (3/2) particle whose Hamiltonian is given by H = (α)/(\hbar2) (Sx2 + Sy2 - 2Sz2) - (β)/(\hbar) Sz, where α, β are constants. Are these levels degenerate? (c) Explain the formation of molecular hydrogen in the interstellar medium.

Section A

Q3. (a) A beam of hydrogen atoms in a Stern-Gerlach experiment obtained from an oven heated to a temperature of 400 K passes through a magnetic field of length 1 m and having a gradient of 10 T/m perpendicular to the beam. Calculate the transverse deflection of an atom of the beam at a point where the beam leaves the field. The value of Bohr magneton μ_B is 9.27 × 10-24 A m2 and the Boltzmann constant k is 1.38 × 10-23 J/K.

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Indian Forest Service Main Examination 2024 Physics Paper II page 1 instructions scan PDF download UPSC
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Indian Forest Service Main Examination 2024 Physics Paper II page 1 instructions scan PDF download UPSC

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Frequently asked questions

What is the name of the exam?

The exam is the Indian Forest Service (Main) Examination.

What is the year of this question paper?

This question paper is from the year 2024.

Which conducting body releases this paper?

The paper is released by UPSC (Union Public Service Commission).

What is the subject of this paper?

The subject is Physics, specifically Paper II.

What is the type of questions in this paper?

The questions in this paper are descriptive.

How many questions are in the paper?

There are eight questions in total.

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