Spatial variation in horizontal and vertical directions is caused due to_________________?
(A) Physical weathering of rocks
(B) Chemical weathering of rocks
(C) Biological weathering of rocks
(D) All of these
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 most widely used antenna in GPS is_______________?
(A) Parabolic antenna
(B) Microstrip antenna
(C) Horn antenna
(D) Slotted antenna
Which one of the following attributes is not associated with digital maps_______________?
(A) Colour
(B) Symbology
(C) Legends
(D) South arrow
In GPS, receivers used are___________________?
(A) Electronic clocks
(B) Atomic clocks
(C) Quartz clocks
(D) Mechanical clocks
For C band Synthetic Aperture Radar (SAR) with Doppler band width of 1300 Hz, the coherence length loch is_____________?
(A) 130 km
(B) 230 km
(C) 250 km
(D) 500 km
Which on speed C. of the electromagnetic wave is correct ?
(A) C = v
(B) C = /v
(C) C = v
(D) C = 1/
Which one of the following frequency regions is a part of sun’s radiation ?
(A) Ultraviolet frequency region
(B) Infrared frequency region
(C) Radio frequency region
(D) All of these
Which one of the following geometric errors of satellite sensors is random ?
(A) Scan skew
(B) Panoramic distortion
(C) Earth rotation
(D) Altitude variation
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