Elements Of Remote Sensing MCQ Questions & Answers

31

Which one of the following statement is correct?

A) Radiant energy expressed in Joules, is the energy associated with electromagnetic radiation B) The rate of transfer of radiant energy is called flux and is expressed in watts C) The radiant energy which falls upon a surface is termed as irradiance D) All of these

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Answer & Solution

Answer: Option D

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32

The coherence length over which there is a strong relationship between amplitudes is;

A) Directly proportional to the bandwidth B) Inversely proportional to the bandwidth C) The square of the bandwidth D) None of these

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Answer & Solution

Answer: Option B

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33

Crop Acreage and Production Estimation (CAPE) was funded and taken up in 1983 by:

A) USA B) European Union C) Russia D) India

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Answer & Solution

Answer: Option D

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34

"An Electromagnetic wave falls on to a boundary between two losses less homogeneous media with different refractive indices, a part of the wave is reflected back to the incident medium and the rest is transmitted on to the second media". This phenomenon is known as:

A) Fresnel reflection B) Fresnel refraction C) Snell's law D) None of these

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Answer & Solution

Answer: Option A

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35

Which one of the following geometric errors of satellite sensors is random?

A) Scan skew B) Panoramic distortion C) Earth rotation D) Altitude variation

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Answer & Solution

Answer: Option D

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36

In GPS, receivers are used are;

A) Electronic clocks B) Atomic clocks C) Quartz clocks D) Mechanical clocks

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Answer & Solution

Answer: Option C

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37

Geodimeter is based on:

A) Propagation of modulated light waves B) Propagation of infrared radiation C) The visible light as carrier with frequency of the order of 5 × 1014 Hz D) High frequency radio waves

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Answer & Solution

Answer: Option A

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38

If flying height of a spacecraft is H, the length of air base is B and the parallax difference between two points is dp, then the difference in height

A) $${\text{h}} = \frac{{{\text{dp}}}}{{\frac{{\text{B}}}{{\text{H}}}}}$$ B) $${\text{h}} = \frac{{\text{B}}}{{\text{H}}} \times {\text{dp}}$$ C) $${\text{h}} = \frac{{{\text{dp}}}}{{\frac{{\text{H}}}{{\text{B}}}}}$$ D) $${\text{h}} = {\text{BHbp}}$$

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Answer & Solution

Answer: Option A

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39

In case of reflection and refraction of electromagnetic radiation,

A) Angle of incidence = angle of refraction B) Angle of incidence = angle of reflection C) Angle of refraction = sum of the angles of incidence and refraction D) All the above

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Answer & Solution

Answer: Option B

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40

Electromagnetic radiation:

A) Produces a time varying magnetic field and vice versa B) Once generated, remains self-propagating C) Is capable to travel across space D) All of these

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Answer & Solution

Answer: Option D

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Elements Of Remote Sensing MCQ Questions & Answers | Civil Engineering