6. Radar resolution has the unit of :
(a) meter
(b) seconds
(c) degrees
(d) meter/second
7. VHF radar operates at a wavelength of :
(a) 10 m 1 m
(b) 1 m 30 m
(c) 1 m 10 m
(d) 3 cm
8. Radar is used for :
(a) ground mapping only
(b) airport surveillance only
(c) weather forecast only
(d) ground mapping, airport surveillance and weather forecast
9. 40 GHz 300 GHz band is used in :
(a) satellites
(b) radar experiments
(c) police radios
(d) televisions
10. Pulse repetition interval is :
(a) PW + PI
(b) PW – PI
(c) PW × PRF
(d) PW / PRF
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