Time period is reciprocal of:
Frequency
Cycle
Wave-length
Amplitude
The waves in which particles of the medium vibrate parallel to the direction of waves are called:
Longitudinal waves
Transverse waves
Electromagnetic waves
Both a and c
Which of the following reasons increase the importance of computer:
Speedy
Long time storage of memory
Quick decision
All of these
Which component is output device of computer:
CPU
C.D
Keyboard
Monitor
Information storage device work on the principles of:
Heat
Sound
Light
Magnetism
The energy is transferred from one place of another:
through matter
through waves
both a and b
through vacuum