Geo-Physics Paper III UPSC 2018 Question Paper PDF

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  • Year 2018
  • Conducted By UPSC
  • Questions 10
  • Maximum Marks 200
  • Duration Three Hours
  • Languages English

Exam Details

Detail Information
Examination Combined Geo-Scientist and Geologist Examination
Year 2018
Conducting Body UPSC
Paper Geo-Physics Paper - III
Subject Geo-Physics
Duration Three Hours
Maximum Marks 200
Number of Questions 10
Question Type Descriptive / Subjective

This document contains the Geo-Physics Paper III from the UPSC Combined Geo-Scientist and Geologist Examination held in 2018. The paper is designed to assess candidates' knowledge in Geo-Physics, carrying a maximum of 200 marks and a time limit of three hours. It consists of descriptive questions, requiring candidates to attempt six out of ten questions, with specific compulsory questions. This paper is crucial for aspirants preparing for the Geo-Scientist and Geologist recruitment process conducted by UPSC.

Major Topics Covered

  • Electromagnetic Energy
  • Seismic Method
  • Notch Filter
  • Remote Sensing
  • Seismic Data Acquisition
  • Reflectance, Absorbance, Transmittance
  • Satellite Orbit
  • Deconvolution
  • Convolution
  • Radioactive Series
  • Photon Energy
  • Stefan-Boltzmann Law
  • Seismic Data
  • Marine Seismic Reflection
  • Ocean Basin
  • Ocean Ridge
  • Ocean Trench
  • Radiometric Age Dating

Why This Paper is Important

  • Useful for Geo-Physics Paper - III 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

  • Geo-Physics Paper I UPSC 2018
  • Geo-Physics Paper II UPSC 2018
  • Geology Paper I UPSC 2018
  • Geology Paper II UPSC 2018
  • Geo-Physics Paper III UPSC 2018 Answer Key
  • Geo-Physics Syllabus UPSC
  • Combined Geo-Scientist Syllabus
  • Combined Geo-Scientist Exam Pattern

Instructions

  • YLO-T-GPHY भू-विज्ञान परीक्षा EOLOGIST EXAM-2018 GEO-PHYSICS Paper - III Maximum Marks: 200

  • There are TEN questions divided under TWO sections.
  • Candidate has to attempt SIX questions in all.
  • Out of the remaining EIGHT questions, FOUR questions are to be attempted choosing TWO from each section.
  • The number of marks carried by a question \sqrt{2} part is indicated against it.
  • 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.
  • Answers must be written in ENGLISH only.
  • Neat sketches may be drawn to illustrate answers, wherever required.
  • Unless otherwise mentioned, symbols and notations have their usual standard meanings.
  • Assume suitable data, if necessary, and indicate the same clearly.

Questions (page 2)

Section A

Q1.

(a) Explain electromagnetic energy and its two units in which electromagnetic wavelength is measured.

(b) Describe three principal applications of the seismic method.

(c) What is a notch filter and what is its application?

(d) Explain passive and active remote sensing with suitable examples.

(e) Calculate seismic data fold, if number of channels in a streamer is 120, shot and group interval is 25 m.

(f) Describe reflectance, absorbance and transmittance with balance equation.

(g) Describe satellite orbit and swath in detail. On which factors does orbit selection depend?

(h) What do you mean by deconvolution ? Find out the convolution of two signals given below:
x1(n) = [0, 1, 2, 3]
x2(n) = [-1, -1, 3, 4]

(i) What is Radioactive series ? How many steps (α and β) emission take place from parent 92238U to stable daughter product 82206Pb ?

Section A

Q2.

(a) (i) What is the energy of a photon with a wavelength of 400 nm?
(ii) List out four weather satellites.
(iii) Explain the Stefan-Boltzmann law of radiation.

(b) (i) Describe ghost and peg-leg in seismic data with neat sketch diagram.
(ii) Explain the principle of seismic reflection data acquisition in marine environment with neat sketch diagram.

(c) (i) Discuss ocean basin, ocean ridge and ocean trench with suitable examples.
(ii) What is radiometric age dating ? How can you calculate the absolute age of a rock?

Question paper preview

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Geo-Physics Paper III UPSC 2018 Combined Geo-Scientist and Geologist Examination question paper page 1 instructions scan PDF download
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Geo-Physics Paper III UPSC 2018 Combined Geo-Scientist and Geologist Examination question paper page 1 instructions scan PDF download

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Frequently asked questions

What is the name of the exam for which this Geo-Physics Paper III is conducted?

This paper is part of the Combined Geo-Scientist and Geologist Examination.

Which conducting body releases this question paper?

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

What is the year of this Geo-Physics Paper III question paper?

The year of this question paper is 2018.

What is the maximum marks for Geo-Physics Paper III?

The maximum marks for Geo-Physics Paper III is 200.

What is the time duration allowed for Geo-Physics Paper III?

The time allowed for Geo-Physics Paper III is Three Hours.

What is the subject of this paper?

The subject of this paper is Geo-Physics.

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