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The amplified video signals are amplitude modulated using a suitable r.f. carrier wave in a transmitter called ‘AM' picture transmitter. Similarly, the amplified audio signals are frequency modulated using another r.f. carrier wave of higher frequency in a transmitter called ‘FM' sound transmitter.
These video and audio modulated carrier waves together are fed to the transmitting antenna on a tower. The transmitting antenna broadcasts the combined signal radiation into space.
Explain the Nuclear Chain Reactions Fission is the breaking up of a massive nucleus into two fragments, with the release of energy and some particles. Uranium 235 fissions upon
Potential barrier One either side of the junction, the region ‘D' becomes free from mobile charge carriers. That is on n-type side of D, no free electrons exist and on p-type s
Two particles execute S.H.M of same amplitude and frequency ,along the same straight line from same mean position.They cross one another without collision,when going in opposite di
Cut an apple in two parts with inertia Secure a long sharp knife like as a carving knife. Cut into the apple with the knife unless you can pick them up together. Be sure to hav
what is non conventional sources?
Conductor: Conductors are those substances which permit electric current to passes easily by them. e.g. Metal, impure, water etc.
State Kirchhoff's rules of current distribution in an electrical network. Using these rules verify the value of the current in the electric circuit given below.
Two speakers are driven by the same oscillator whose frequency is f. They are located a distance d from each other on a vertical pole. A man walks straight toward the lower speaker
Q. Explain about end rule? When glanced from one end if the current through the solenoid is along clockwise direction the nearer end corresponds to South Pole and the other end
What is fusion? It is a nuclear reaction in which two nuclei join to form larger (with nearly combined mass) nuclei. It discharges lot of energy. Sun and stars discharge energy
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