A. Spectral variation
B. Spatial variation
C. Temporal variation
D. None of these
✅ The correct answer is option B.
Elements of Remote Sensing MCQs
A and B are two towers of equal height diametrically opposite on either side of the nadir point, at 3 km and 5 km distances. Which one of the following statements is correct?
A. Height displacement of A will be less than that of B
B. Height displacement of B will be less than that of A
C. Height displacement of A and B is equal
D. Height displacement of A and B will be towards each other
✅ The correct answer is option A.
For interpolation of satellite data used for monitoring dynamic changes that occurs on the earth surface, the most suitable orbit for the satellite is______________?
A. Circular orbit
B. Sun-synchronous orbit
C. Near polar orbit
D. None of these
✅ The correct answer is option B.
The refractive index of the ocean water_______________?
A. Increases with salinity
B. Increases with temperature
C. Decreases with salinity
D. Decreases with temperature
✅ The correct answer is option A.
The most widely used antenna in GPS is_______________?
A. Parabolic antenna
B. Microstrip antenna
C. Horn antenna
D. Slotted antenna
✅ The correct answer is option B.
The value of energy quantum for radiation of any frequency is proportional to________________?
A. The frequency
B. The reciprocal of the energy
C. The square of the frequency
D. The square root of the frequency
✅ The correct answer is option A.
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___________________?
A. Cm = 1/
B. Cm
C. Cm
D. None of these
✅ The correct answer is option B.
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. h = dp/(B/H)
B. h = (B/H) dp
C. h = dp/(H/B)
D. h = (H/B) dp
✅ The correct answer is option A.
The changes in the reflectivity/emissivity with time, is called ?
A. Spectral variation
B. Spatial variation
C. Temporal variation
D. None of these
✅ The correct answer is option C.
Who coined the term, ‘Remote sensing_______________?
A. Evelyn L. Pruitt, a geographer
B. Gaspard Felix Tournachon, a French scientist
C. Wilbur Wright, an Italian scientist
D. None of these
✅ The correct answer is option A.