Indian Forest Service 2018 Physics Paper II Question Paper PDF

Central Government Jobs Other Jobs 2018

  • Year 2018
  • Conducted By UPSC
  • Questions 8
  • Maximum Marks 200
  • Duration Three Hours
  • Languages English

Exam Details

Detail Information
Examination Indian Forest Service (Main) Examination
Year 2018
Conducting Body UPSC
Paper Physics Paper - II
Subject Physics
Duration Three Hours
Maximum Marks 200
Number of Questions 8
Question Type Mixed

This is the Physics Paper II from the Indian Forest Service (Main) Examination held in 2018, conducted by UPSC. The paper is designed to test advanced physics knowledge, with a total of 8 questions, of which 5 are to be attempted. Compulsory questions are Q1 and Q5, and candidates must select at least one from each of the two sections (A and B) from the remaining six. The exam allows three hours to complete and carries a maximum of 200 marks. This paper is crucial for aspirants aiming to qualify for the Indian Forest Service, providing insights into the depth and breadth of physics topics assessed.

Major Topics Covered

  • Uncertainty Principle
  • Harmonic Oscillator
  • Electron
  • Proton
  • Magnetic Moment
  • Angular Momentum
  • Quantum Mechanics
  • Transmission Probability
  • Potential Barrier

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 2018 Physics Paper I
  • Indian Forest Service (Main) Examination 2017 Physics Paper II
  • UPSC Civil Services Exam 2018 Physics Optional Paper
  • Indian Forest Service (Main) Examination 2018 Physics Paper II Answer Key
  • Indian Forest Service Physics Syllabus
  • UPSC Main Exam Physics Syllabus
  • Indian Forest Service Exam Pattern
  • UPSC Main Examination Pattern

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\times10^{-27}\ \mathrm{kg} Mass of proton = = 1.675 \times 10^{-27} kg Mass of neutron = 9.11 \times 10^{-31} kg Mass of electron Planck constant = 6.626 \times 10^{-34} Js = 1.380 \times 10^{-23} \text{ JK}^{-1} Boltzmann constant = 9.273 \times 10^{-24} A m2 Bohr magneton (\mu_R) = 5.051 \times 10^{-27} \text{ JT}^{-1} (\text{A m}^2) 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 = 1.00727 u = 5.5855 \mu_N m(p) m(^{4}_{9}He) = 1.00866 \text{ u} = 4.002603 u m(n) m(^{12}_{6}C) = 12.00000 \text{ u} m(^{87}_{38}Sr) = 86.908893 u m(^{3}_{1}H) = 3.0160500 u m(^{2}_{1}H) = 2.014022 u m(^{16}_{8}O) = 15.999 u = 1.05 \times 10^{-34} Js \hbar = 197 eVnm ħс

Questions (page 2)

Section A

Q1.

(a) Use uncertainty principle to estimate the ground state energy of a linear harmonic oscillator.

(b) Consider an electron circulating around a proton (as shown in figure) in a circular orbit of radius, r. Assuming the motion of orbiting electron equivalent to an electrical current loop, find the expression for the ratio of magnetic moment to the angular momentum of the system and estimate the numerical value of this ratio.

(c) Electrons with energies of 1.0 eV and 2.0 eV are incident on a barrier 10.00 eV high and 0.50 nm (nanometer) wide. Calculate the ratio of their respective transmission probabilities across the barrier.

Question paper preview

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IFS 2018 Physics Paper II question paper page 1 instructions scan PDF download. UPSC Indian Forest Service Main Examination 2018 Physics Paper II exam header and instructions.
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IFS 2018 Physics Paper II question paper page 1 instructions scan PDF download. UPSC Indian Forest Service Main Examination 2018 Physics Paper II exam header and instructions.

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Frequently asked questions

What is the name of the exam?

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

What year is this question paper from?

This question paper is from the year 2018.

Which paper is this?

This is Physics Paper - II.

Who conducts the Indian Forest Service Examination?

The examination is conducted by UPSC (Union Public Service Commission).

What is the maximum marks for Physics Paper - II?

The maximum marks for Physics Paper - II is 200.

What is the time duration allowed for this paper?

The time allowed for this paper is Three Hours.

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