Q. Consider the following statements:
1.Passive sensors in remote sensing measure natural energy that is either reflected (sunlight) or emitted by the Earth.
2.Active sensors provide their own source of energy, such as a laser or radar, to illuminate the objects they observe.
3.Remote sensing applications are limited strictly to land-based agriculture and cannot be used for oceanography or weather forecasting.
How many of the statements given above are correct?
Answer: B
Notes:
Explanation:
- Statements 1 and 2 are correct: These define the two primary types of sensing.
- Statement 3 is incorrect: Remote sensing has wide applications, including monitoring ocean currents and predicting hurricanes.
