Why sattelites are used to transmit TV waves at long Distances?

Why is salt-bridge used?

Write down the uses of radio waves.

Why is satellite used for TV transmission to far places?

Why is satellite used for TV transmission to far places?

What will be the height of the antena to transmit the TV signal to a distance of 32km[R=6400Km]

The teachers of Geeta's school took the students on a study trip to a power generating station, located nearly 200km away from the city. The teacher explained that electrical energy is transmitted over such a long distance to their city. In the form of alternating current (ac) raised to a high voltage. At the receiving end in the city, the voltage is reduced to operate the devices. As a result, the power loss is reduced. Geeta listened to the teacher and asked questions about how the ac is converted to a higher or lower voltage. Explain with an example , how power loss is reduced if the energy is transmitted over long distances as an alternating current rather than a direct current .

As radio waves of low frequencies cannot be transmitted to long distances, a high frequency carrier signal is superposed on it. This process is called

As radio waves of low frequencies cannot be transmitted to long distances, a high frequency carrier signal is superposed on it.This process is called—

Why soaps are not used in hard water?