Elements of Remote Sensing MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Elements of Remote Sensing, a fundamental topic in the field of Civil Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Elements of Remote Sensing MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Elements of Remote Sensing mcq questions that explore various aspects of Elements of Remote Sensing problems. Each MCQ is crafted to challenge your understanding of Elements of Remote Sensing principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Civil Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Elements of Remote Sensing MCQs are your pathway to success in mastering this essential Civil Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Elements of Remote Sensing. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

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Elements of Remote Sensing MCQs | Page 7 of 15

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Q61.
Orbital radius of GPS satellites is approximately:

a.

15,200 km

b.

26,600 km

c.

18,400 km

d.

36,000 km

Discuss
Answer: (b).26,600 km
Q62.
A passive sensor uses :

a.

sun as the source of energy

b.

flash light as a source of energy

c.

its own source of energy

d.

None of these

Discuss
Answer: (a).sun as the source of energy
Q63.
The infrared portion of EMR lies between

a.

0.4 - 0.7 μm

b.

0.5 mm to lm

c.

0.7 - 1.3 μm

d.

0.7 to 14 μm

Discuss
Answer: (d).0.7 to 14 μm
Q64.
Who coined the term, 'Remote sensing'.

a.

Evelyn L. Pruitt, a geographer

b.

Gaspard Felix Tournachon, a French scientist

c.

Wilbur Wright, an Italian sciencist

d.

None of these

Discuss
Answer: (a).Evelyn L. Pruitt, a geographer
Q65.
For C band Synthetic Aperture Radar (SAR) with Doppler band width of 1300 Hz, the coherence length lcoh is:

a.

130 km

b.

230 km

c.

250 km

d.

500 km

Discuss
Answer: (b).230 km
Q66.
Pick up the correct statement from the following:

a.

A graphical representation of spectral reflectance versis the various growth stages of a crop, depicts a phenologic pattern

b.

The changes in the polarisation of the radiation reflected or emitted by an object, is known as polarisation variation.

c.

The degree of polarisation is a characteristic of the object which helps in the identification of the object.

d.

All of these

Discuss
Answer: (d).All of these
Q67.
Which one of the following quantities forms the basis of radiometery?

a.

Radiant energy (Q)

b.

Radiant flux (φ)

c.

Radiant intensity (I)

d.

All of these

Discuss
Answer: (d).All of these
Q68.
The maximum sun's radiation occurs around:

a.

0.4 μm wave length

b.

0.55 μ wave length

c.

0.7 μ wave length

d.

None of these

Discuss
Answer: (b).0.55 μ wave length
Q69.
Pick up the correct statement from the following :

a.

The minimum frequency of light for which no electrons are emitted, is called threshold frequency.

b.

Polarising angle of glass is 57°.5

c.

At the polarising angle, the reflected and refracted rays are orthogonal

d.

All the above

Discuss
Answer: (d).All the above
Q70.
Pick up the correct statement from the following:

a.

The refractive index of a medium varies according to the wavelength of the radiation,

b.

The variation of the refractive index with wave length, is called dispersion,

c.

The splitting of colours of white light by passing through a prism, is caused due to dispersion.

d.

All the these

Discuss
Answer: (d).All the these
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