Physics
The height of a geo-stationary satellite from the Earth's surface is approximately :

36,000 km
42,000 km
30,000 km
None of these

ANSWER DOWNLOAD EXAMIANS APP

Physics
Why does the sea appear blue in colour?

Scattering of the sunlight by water molecules
Refraction of the sun light
Interference of the sun light from water surface
Reflection of the sun light from water surface

ANSWER DOWNLOAD EXAMIANS APP