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Elements Of Remote Sensing — Part 2 MCQs with Explanations

Practice high-yield Civil Engineering MCQs on Elements Of Remote Sensing — Part 2 with worked academic solutions for PPSC SDO, FPSC AEE, C&W, Irrigation, NTS.

Questions
39
Difficulty Level
Exam-Level
Target Exams
PPSC SDO, FPSC AEE, C&W...
Estimated Time
47 mins
Exam-Level PPSC SDO FPSC AEE C&W Irrigation NTS
Verified for Commission Syllabus • Oct 14, 2026
39

Verified Practice Questions

Interactive test mode with detailed academic worked solutions

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Question 1 of 39
★ PPSC SDO ★ FPSC AEE

In the given figure the phase of

Question 2 of 39
★ PPSC SDO ★ FPSC AEE

Which one of the following helps to identify the objects on the earth surface?

Question 3 of 39
★ PPSC SDO ★ FPSC AEE

The interaction of the electromagnetic radiation produced with a specific wave length to illuminate a target on the terrain for studying its scattered radiance, is called:

Question 4 of 39
★ PPSC SDO ★ FPSC AEE

The remote sensing techniques applied for the earth's surface features, is generally confined to the following wave lengths:

Question 5 of 39
★ PPSC SDO ★ FPSC AEE

Orbital radius of GPS satellites is approximately:

Question 6 of 39
★ PPSC SDO ★ FPSC AEE

Spatial variation in horizontal and vertical directions is caused due to:

Question 7 of 39
★ PPSC SDO ★ FPSC AEE

Which one of the following quantities forms the basis of radiometry?

Question 8 of 39
★ PPSC SDO ★ FPSC AEE

The arrangement of terrain features which provides attributes: the shape, size and texture of objects, is called:

Question 9 of 39
★ PPSC SDO ★ FPSC AEE

‘A’ and ‘B’ are two towers of equal height diametrically opposite on either side of the nadir point, at 3 km and 5 km distances. Which one of the following statements is correct?

Question 10 of 39
★ PPSC SDO ★ FPSC AEE

Leaf reflectance depends primarily on:

Question 11 of 39
★ PPSC SDO ★ FPSC AEE

The code based GPS receivers are generally used for:

Question 12 of 39
★ PPSC SDO ★ FPSC AEE

Which one of the following statements regarding remote sensing is correct?

Question 13 of 39
★ PPSC SDO ★ FPSC AEE

The object of photo-interpretation is:

Question 14 of 39
★ PPSC SDO ★ FPSC AEE

The various stages occuring in GPS system are described below: 1. Generation of an output to the user 2. Detection of the GPS signals 3. Processing the data in the built-in-computer 4. Decoding the GPS signal. The correct sequence of the stages is:

Question 15 of 39
★ PPSC SDO ★ FPSC AEE

Pick up the important characteristic of a target which facilitates its identification from the following:

Question 16 of 39
★ PPSC SDO ★ FPSC AEE

'A time varying electric field produces a magnetic field.' This phenomenon is called:

Question 17 of 39
★ PPSC SDO ★ FPSC AEE

The reflectance from a surface is called specular reflection if it follows:

Question 18 of 39
★ PPSC SDO ★ FPSC AEE

The maximum sun's radiation occurs around:

Question 19 of 39
★ PPSC SDO ★ FPSC AEE

Critical angle of electromagnetic radiation takes place if

Question 20 of 39
★ PPSC SDO ★ FPSC AEE

The reflection of solar energy is characterized by the water content in the leaf, in the reflective optical infrared:

Question 21 of 39
★ PPSC SDO ★ FPSC AEE

Which one the following is a correct statement?

Question 22 of 39
★ PPSC SDO ★ FPSC AEE

Electromagnetic spectrum contains:

Question 23 of 39
★ PPSC SDO ★ FPSC AEE

Earth observations from a satellite platform provide:

Question 24 of 39
★ PPSC SDO ★ FPSC AEE

The instruments which provide electromagnetic radiation of specified wave length or a band of wave lengths to illuminate the earth surface are called:

Question 25 of 39
★ PPSC SDO ★ FPSC AEE

Consider the following statements regarding the satellite imaging: 1. The satellite orbit is fixed in the inertial space 2. During successive across-track imaging, the earth rotates beneath the sensor 3. The satellite images a skewed area Which one of the following statements is/are correct?

Question 26 of 39
★ PPSC SDO ★ FPSC AEE

Due to scan geometry of a satellite sensor:

Question 27 of 39
★ PPSC SDO ★ FPSC AEE

Coherence of two electromagnetic waves takes place if their phase difference is:

Question 28 of 39
★ PPSC SDO ★ FPSC AEE

The basic requirement of any sensor system is:

Question 29 of 39
★ PPSC SDO ★ FPSC AEE

A passive sensor uses:

Question 30 of 39
★ PPSC SDO ★ FPSC AEE

DGPS is based on the concept that bias errors in the position of locations in a given local area, are same if their distances are within

Question 31 of 39
★ PPSC SDO ★ FPSC AEE

Which one of the following residual biases involves the GPS accuracy?

Question 32 of 39
★ PPSC SDO ★ FPSC AEE

For interpolation of satellite data used for monitoring dynamic changes that occurs on the earth surface, the most suitable orbit for the satellite is:

Question 33 of 39
★ PPSC SDO ★ FPSC AEE

The entire range of the electromagnetic spectrum spans a large spectrum of wave lengths varying from:

Question 34 of 39
★ PPSC SDO ★ FPSC AEE

The spectral region of the electromagnetic radiation which passes through the atmosphere without much attenuation is known as:

Question 35 of 39
★ PPSC SDO ★ FPSC AEE

A reduction of nitrogen nutrient in plants:

Question 36 of 39
★ PPSC SDO ★ FPSC AEE

Formation of snow occurs if the cloud temperature is

Question 37 of 39
★ PPSC SDO ★ FPSC AEE

The GPS space segment consists of Navigation Satellite Timing and Ranging whose number is :

Question 38 of 39
★ PPSC SDO ★ FPSC AEE

Which one of the following attributes is not associated with digital maps

Question 39 of 39
★ PPSC SDO ★ FPSC AEE

Repetitive observations of the same area at equal interval of time are useful to monitor the dynamic phenomena:

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In competitive commission exams (FPSC, PPSC, KPPSC, SPSC, CSS, PMS), questions are frequently phrased with distractor options designed to catch rote learners. Whenever you answer an MCQ, read the Detailed Academic Explanation and Conceptual Anchor to understand why the remaining options are incorrect.

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