If capacitance of L-C circuit is made four times then frequency of the circuit becomes___________________? A. TwiceB. One half C. Four times D. None

Waves emitted from the antenna are__________________? A. Sound wavesB. Electromagnetic waves C. Radio waves D. Modulated waves

An electromagnetic wave consists of _____________________? A. Electric and magnetic fields moving parallel to each other B. Magnetic field moving with velocity of light in space C. Electric field moving with velocity of lightD. Electric and magnetic fields moving perpendicular…

Electromagnetic waves travel in free space with the speed of___________________? A. λ-rays B. Positive rays C. Cathode rays D. More than sound waves

An alternating current or voltage_____________________? A. fluctuates off and on B. varies in magnitude aloneC. changes its direction again and again D. changes its magnitude harmonically and reverses its direction of flow after regularly recurring intervals