Radio communication between satelite and earth takes place via
Ground waves
Sky waves
Surface waves
Space waves
As we have learned
Sateilite Communication -
A space craft placed in an orbit around the earth which carries a transmitting and a receiving equipment .
- wherein
Space waves are waves with very high frequency
Since between earth and satelite , there lies ionosphere which reflects radio waves of low frequency back to earth , the communication is not possible with low frequency waves
Ground waves , surface waves and sky waves have freq below 30 MHz , thus they may not be used for satelite communication
Study 40% syllabus and score up to 100% marks in JEE
5 g of Na2SO4 was dissolved in x g of H2O. The change in freezing point was found to be 3.820C. If Na2SO4 is 81.5% ionised, the value of x (K
A capacitor is made of two square plates each of side 'a' making a very small angle
A solution of m-chloroaniline, m-chlorophenol and m-chlorobenzoic acid in ethyl acetate was extracted initially with a saturated solution of NaHCO3 to give fraction A. The leftover organic phase was extracted with d