Elements of Remote Sensing MCQ

Elements of Remote Sensing MCQ

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  • 18th Sep, 2021

Take Remote Sensing MCQ Test & Online Quiz to test your knowledge

We have listed here the best Remote Sensing MCQ Questions that check your basic knowledge of Elements of Remote Sensing. This Remote Sensing MCQ Test contains 25+ best Multiple Choice Questions. You have to select the right answer to every question. Finally, you can also download here the Remote Sensing MCQ PDF for the best preparation of the Remote Sensing Exam/Interview.

Remote sensing is a technology used exclusively to get information about the earth. Information about an object or event is often obtained without making physical contact with this technology. This technology is used in many fields like geography, military, intelligence. Commercial, economic planning, land surveying and is completed to urge accurate information about the topics associated with the earth. Remote sensing typically uses satellite or aircraft-based sensor technologies to detect and classify objects on Earth. This includes the surface, atmosphere, and oceans supported propagated signals like an electromagnetic wave. It is often divided into 2 types "active remote sensing" and "passive remote sensing". Active remote sensing, a satellite or aircraft detects an object and its image by a sensor, while passive remote sensing detects sunlight by the sensor.

Remote Sensing MCQ Test

1) The refractive index of ocean water increases with salinity.

  • A. True
  • B.False

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

  • A. Signature
  • B.Radiometric error
  • C.Atmospheric window
  • D.None of the above

3) which one of the following errors is produced by platform characteristics of the sensor?

  • A. Altitude
  • B.Orbit drift
  • C.Altitude variation
  • D.All of the above

4) The basic requirement of any sensor system is ..........

  • A. Spatial resolution
  • B.Spectral resolution
  • C.Radiometric resolution
  • D.All of the above

5) The value of energy quantum for radiation of any frequency is proportional to -

  • A. The frequency
  • B.The square of the frequency
  • C.The reciprocal of the energy
  • D.The square root of the frequency

6) Coherence of two electromagnetic waves takes place if their phase difference is ............

  • A. Constant in time
  • B.Constant in space
  • C.Both A & B
  • D.None of the above

7) Which one of the following frequency regions is a part of sun's radiation?

  • A. Visible frequency region
  • B.Radio frequency region
  • C.Infrared frequency region
  • D.All of the above

8) Does remote sensing use Electro-magnetic waves in its procedure?

  • A. Yes
  • B.No

9) Which of these is not a principle of remote sensing?

  • A. Electromagnetic energy
  • B.Electro-magnetic spectrum
  • C.Interaction of energy with satellite
  • D.Interaction of energy with atmosphere

10) ............. is used by the EM waves.

  • A. Solar field
  • B.Micro field
  • C.Electric field
  • D.Polarized field

11) Which of the following wave is not employed in case of remote sensing?

  • A. X-ray
  • B.Thermal IR
  • C.Visible ray
  • D.Radio waves

12) What is a perfectly black body?

  • A. It is a diffuse emitter
  • B.It emits power of every wave length
  • C.It absorbs all the radiations of every wave lengths
  • D.All of the above

13) Remote sensing techniques make use of the properties of

  • A. Sound waves
  • B.Electric waves
  • C.Electromagnetic waves
  • D.All of the above

14) The normal altitude of GPS satellite is about

  • A. 16, 200 km
  • B.20, 200 km
  • C.24, 400 km
  • D.None of the above

15) The energy transported by the electromagnetic wave is proportional to .........

  • A. The altitude of the wave
  • B.The square roof of the amplitude
  • C.The cube of the altitude of the wave
  • D.The square of the altitude of the wave

16) While passing through the atmosphere, the solar radiation .......

  • A. Gets scattered
  • B.Remains unaffected
  • C.Gets absorbed partially
  • D.None of the above

17) A remote sensor photographic camera responses spectrum up to about 0.9 μ.

  • A. True
  • B.False

18) Which of the following statements is incorrect?

  • A. GIS technology is the same as traditional mapping
  • B.GIS technology contains analytic capabilities for overlaying maps
  • C.GIS technology is capable to study the environmental surrondings
  • D.All of the above

19) Which kind of waves can travel through empty space?

  • A. Water waves
  • B.Sound waves
  • C.Spring waves
  • D.Electromagnetic waves

20) The range measurements in GPS are made with ...........

  • A. 2 C - band frequencies
  • B.3 L - band frequencies
  • C.2 L - band frequencies
  • D.3 C - band frequencies

21) Which of the following waves can be used in case of remote sensing?

  • A. X-rays
  • B.UV rays
  • C.Visible rays
  • D.All of the Above

22) The most widely used antenna in GPS is ...............

  • A. Horn antenna
  • B.Slotted antenna
  • C.Microstrip antenna
  • D.None of above

23) Which type of remote sensing uses its own source of electromagnetic energy?

  • A. Active remote sensing
  • B.Passive remote sensing
  • C.Both Active & Passive Remote Sensing
  • D.None of above

24) The altitudinal distance of a geostationary satellite from the earth is about ..................

  • A. 26,000 km
  • B.30,000 km
  • C.34,000 km
  • D.36,000 km

25) Remote sensing includes gathering of

  • A. Sounds
  • B.Images
  • C.Changes
  • D.Movements

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