Where from does it come to mobile towers?

Where from do mobile towers receive the signals?

If Ram secures 100 marks in maths, then he will get a mobile. The converse is: a)If Ram gets a mobile, then he Will not secure 100 marks b)If Ram does not get a mobile, then he will secure 100 marks. c)If Ram will get a mobile, then he secures 100 marks in maths. d)If Ram does not get a mobile, then he will not score 100 marks.

Where does the centre of mass of a uniform rectangular lamina lie ?

A stone is dropped from the top of a tower of height 45 m. One second later another stone is thrown down from the town of the same tower. Both stones reach the ground at the same time. If (g= 10 m/s^2), magnitude of the initial velocity of the sound stone is

Where does the signal to your TV set come from?

Where does the signal to your TV set come from ?