Information and Communication Technology
Signals falling on the transmission antenna oscillate the charges which then emit the electrical signals in the form of
electric current
electromagnet radio waves
light waves
sound waves
electromagnet radio waves
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To send the sound waves to far off areas, they are converted toA. radio waves
B. frequency
C. microwaves
D. electromagnetic waves
Data storage devices are
A. random acess memory (RAM)
B. read only memory (ROM)
C. secondly memory
D. primary memory
Sound waves produced at the radio station through microphone changed into
A. electrical signals
B. heat waves
C. light waves
D. sound waves
The electric current flowing through an electromagnetic in the receiver produces a varying
A. potential field
B. magnetic field
C. shock field
D. none of above
The light will escape through optic fiber if the angle of incidence with cladding becomes
A. more than critical angle
B. less than critical angle
C. equal to critical angle
D. equal to total internal reflection
Cassettes are based on
A. electricity
B. magnetism
C. electromagnetism
D. waves
We can develop any document and see it on the screen after typing by using
A. operating system
B. word processing
C. data management
D. managing system
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