1) light year is the unit of length
2) time it takes for earth to rotate...8.64*10^4 s
3) alternate energy's mcq answer was 'd', ( all of the above)
4) enzymes are made of protein
5) barometer measures pressure
6) astronomical unit is 149 million km
7) harmful microorganisms are called pathogens
8) sky is blue due to scattering(option d)
9) in combustion engine chemical energy is converted to mechanical
10) dengue virus is spread by Tiger mosquito
11) How are cyclones formed?
12) Earth rotates in which direction,
13) Which wave is dangerous in earthquake ?
14) Radiowaves are reflected by which part of atmosphere? Ionosphere
15) Ozone formula o3
16) Transfer of one electron =ionic bond
17) Antibiotics are used against? bacteria
18) remote sensing can be done through?
19) Daily caloric requirement of a normal adult to maintain his/her weight
Quote:
Originally Posted by Ammarrashid
I think the correct option is c, because remote sensing is done by radars attached to the aircraft and satellites. Neither aircrafts or satellites do remote sensing themselves, radar is the instrument which is used.
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Remote sensing is also done by satellites, and in aircraft through sensors/cameras rather than just radars. Infrared sensor is example.