logo

CuriousTab

CuriousTab

Discussion


Home Civil Engineering Elements of Remote Sensing Comments

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


  • Options
  • A. Cloud evolution
  • B. Vegetative cover
  • C. Snow cover
  • D. Forest fires
  • E. All of these

  • Correct Answer
  • All of these 


  • Elements of Remote Sensing problems


    Search Results


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

    • Options
    • A. Snells's law
    • B. Lambert's cosine law
    • C. Planktan's law
    • D. All of these
    • Discuss
    • 2. Pick up the correct statement from the following :

    • Options
    • A. The first man-made satellite, Sputnikl' was launched on 4th October, 1957
    • B. The United State's Explorer 6 transmitted the first picture of the earth in August 1959
    • C. Television Infrared Observation Satellite (TIROS) designed for meteorological observations, started systematic earth observations from space from 1, April, 1960
    • D. U.S.A.'s highly secret mission CORONA started the collection of intelligence photograpy in 1960
    • E. All of these.
    • Discuss
    • 3. 'A time varrying electric field produces a magnetic field.' This phenemenon is called:

    • Options
    • A. Hertz's law
    • B. Ampere Maxwell's law
    • C. Faraday's law
    • D. Kirchoff s law
    • Discuss
    • 4. Which one of the following geometric errors of satellite sensors is random?

    • Options
    • A. scan skew
    • B. panoramic distortion
    • C. earth rotation
    • D. altitude variation
    • Discuss
    • 5. The altitudinal distance of a geostationary satelite from the earth is about:

    • Options
    • A. 26, 000 km
    • B. 30, 000 km
    • C. 36, 000 km
    • D. 44, 000 km
    • Discuss
    • 6. Pick up the correct statement from the following :

    • Options
    • 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
    • 7. Pick up the correct statement from the following:

    • Options
    • 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
    • 8. The maximum sun's radiation occurs around:

    • Options
    • A. 0.4 ?m wave length
    • B. 0.55 ? wave length
    • C. 0.7 ? wave length
    • D. None of these
    • Discuss
    • 9. If electric permittivity and magnetic permeability of the medium are respectively ? and ?, then the velocity (Cm) of the electromagnetic wave in the medium is given by :

    • Options
    • A.
    • B.
    • C.
    • D. None of these
    • Discuss
    • 10. 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?

    • Options
    • A. 1, 2, 3
    • B. 1, 3
    • C. 2, 3
    • D. 1, 2
    • Discuss


    Comments

    There are no comments.

Enter a new Comment