Elements of Remote Sensing problems
- 1. 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
Correct Answer: 36, 000 km
- 2. 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
Correct Answer: altitude variation
- 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
Correct Answer: Ampere Maxwell's law
- 4. 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
Correct Answer: All of these.
- 5. 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
Correct Answer: Snells's law
- 6. 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 Discuss
Correct Answer: All of these
- 7. 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
Correct Answer: All the above
- 8. 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
Correct Answer: All the these
- 9. 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
Correct Answer: 0.55 ? wave length
- 10. 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
Correct Answer:
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