Remote Sensing and GIS

Which of the following is not a principle of remote sensing?

• Interaction of energy with satellite

• Electromagnetic energy

• Electro-magnetic spectrum

• Interaction of energy with atmosphere

Which of the following field is used by the EM waves

• Solar field

• Polarized field

• Electric field

• Micro field

Polar orbiting satellites are generally placed at an altitude range of __________

• 7-15km

• 7000-15000km

• 700-1500km

• 70-150km

In visible region, the blue light is having a wave length range of __________

• 0.42-0.52 micrometer

• 0.24-0.52 micrometer

• 0.42-0.92 micrometer

• 0.22-0.32 micrometer

Which of the following has the maximum value in an electric or magnetic field?

• Wave length

• Focal length

• Frequency

• Amplitude

In EM waves, electric field is not used.

• False

• True

The wave length sensed in remote sensing are __________

• Nano meters and giga meters range

• Nano meters and deci meters range

• Nano meters and micro meters range

• Nano meters and meters range

In the following figure, X represents___________

• Length

• Time period

• Frequency

• Wave length

In the following figure, X represents___________

• Length

• Time period

• Frequency

• Wave length

The altitudinal distance of a geostationary satellite from the earth is about:

• 26,000 km

• 30,000 km

• 35,000 km

• 44,000 km