ELEMENTS OF REMOTE SENSING QUIZ

Orbital radius of GPS satellites is approximately:

26,600 km

18,400 km

36,000 km

15,200 km

TRUE ANSWER : ?
YOUR ANSWER : ?

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

26,000 km

36,000 km

30,000 km

44,000 km

TRUE ANSWER : ?
YOUR ANSWER : ?

If θ is the angle of scan measured from the nadir, the ground distance swept by the sensor IFOV is proportional to:

sin²θ

cos²θ

tan²θ

sec²θ

TRUE ANSWER : ?
YOUR ANSWER : ?

The most widely used antenna in GPS is

Horn antenna

Slotted antenna

Microstrip antenna

Parabolic antenna

TRUE ANSWER : ?
YOUR ANSWER : ?

Electromagnetic radiation:

Once generated, remains self-propagating

All of these

Produces a time varying magnetic field and vice versa

Is capable to travel across space

TRUE ANSWER : ?
YOUR ANSWER : ?

Leaf reflectance depends primarily on:

Internal cell structure

Equivalent water content

The pigments

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one of the following attributes is not associated with digital maps

Color

Legends

South arrow

Symbology

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one of the following frequency regions is a part of sun's radiation?

Ultraviolet frequency region

Radio frequency region

All of these

Infrared frequency region

TRUE ANSWER : ?
YOUR ANSWER : ?

Formation of snow occurs if the cloud temperature is

Below the freezing point

None of these

At the freezing point

Just above the freezing point

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Sensors

Passive sensors

None of these

Active sensors

TRUE ANSWER : ?
YOUR ANSWER : ?

↑