Question: If the 20 mm rivets are used in lacing bars, then the minimum width of lacing bar should be______________?

• 1. 40mm
• 2. 60mm
• 3. 80mm
• 4. 100mm

Question: Formation of snow occurs if the cloud temperature is________________?

• 1. Just above the freezing point
• 2. At the freezing point
• 3. Below the freezing point
• 4. None of these

Question: The part radiation due to scattered/diffused radiation entering the field of view of a remote sensor other than that from the required target_________________?

• 1. Reduces the contrast of the image and also its sharpness
• 2. Increases the contrast of the image but reduces the sharpness
• 3. Increases both the contrast and sharpness
• 4. Reduces the contrast but increases the sharpness

Question: The basic requirement of any sensor system is___________________?

• 1. Radiometric resolution
• 2. Spatial resolution
• 3. Spectral resolution
• 4. All of these

Question: A passive sensor uses ________________?

• 1. Sun as the source of energy
• 2. Flash light as a source of energ
• 3. Its own source of energy
• 4. None of these

Question: Who coined the term, ‘Remote sensing_______________?

• 1. Evelyn L. Pruitt, a geographer
• 2. Gaspard Felix Tournachon, a French scientist
• 3. Wilbur Wright, an Italian scientist
• 4. None of these

Question: “An Electromagnetic wave falls on to a boundary between two losses less homogeneous media with different refractive indices, a part of the wave is reflected back to the incident medium and the rest is transmitted on to the second media”. This phenomenon i

• 1. Fresnel reflection
• 2. Fresnel refraction
• 3. Snell’s law
• 4. None of these

Question: Orbital radius of GPS satellites is approximately ___________________?

• 1. 15,200 km
• 2. 26,600 km
• 3. 18,400 km
• 4. 36,000 km

Question: The instruments which provide electromagnetic radiation of specified wave length or a band of wave lengths to illuminate the earth surface are called________________?

• 1. Sensors
• 2. Passive sensors
• 3. Active sensors
• 4. None of these

Question: The refractive index of the ocean water_______________?

• 1. Increases with salinity
• 2. Increases with temperature
• 3. Decreases with salinity
• 4. Decreases with temperature