RADAR is used for
A). Detecting and locating the position of objects such as Aeroplanes
B). Locating submerged submarines
C). Locating geostationary satellites
D). Receiving a signals in a radio receiver
Detecting and locating the position of objects such as Aeroplanes
Radar, electromagnetic sensor used for detecting, locating, tracking, and recognizing objects of various kinds at considerable distances. It operates by transmitting electromagnetic energy toward objects, commonly referred to as targets, and observing the echoes returned from them.
1. Which one of the following instruments is used to study dispersion of light
2. The time period of a seconds pendulum is
3. When hot liquid is poured into a thick glass tumbler, it cracks because glass :
4. Which of the following instruments is used to measure humility
5. Railway tracks are banked on curves
6. In optical instrument, the lenses are used to form image by the phenomenon of -
7. The nature of sun's spectrum is
8. A periscope works by the principle of
9. Heat energy is transferred by conduction whenever molecules
10. Which of the following instruments is used to measure humility?