Question

The waveform of a certain signal can be studied by
1. Spectrometer
2. Cathode ray oscilloscope
3. P-n junction diode
4. Sonometer

Answer 1

Correct Answer - Option 2 : Cathode ray oscilloscope

The Correct Answer is 'Cathode ray oscilloscope.'

• The waveform of a certain signal can be studied by a cathode ray oscilloscope.

• The cathode ray oscilloscope is an electronic instrument used to obtain waveforms when the different input signals are given
  • It is also called an oscillograph
  • It is a graph plotting device that is used to measure different characteristics of signals.
  • When horizontal deflection plates and vertical deflection plates of CRO (Cathode Ray Oscilloscope) are connected to two sinusoidal voltages, the patterns that appear at the CRO screen are called the Lissajous pattern
  • The Lissajous pattern obtained in a CRO depends upon frequency, amplitude, and phase relationship
  • The patterns used to measure phase and frequency with a cathode ray oscilloscope are called the Lissajous pattern

• It is an instrument used to measure properties of light over a specific portion of the electromagnetic spectrum.
  • The basic function of a spectrometer is to take light in, break it into its spectral components, digitize the signal as a function of wavelength, and read it out and display it through a computer.
  • The mass spectrometer, NMR spectrometer, and the optical spectrometer are the three most common types of spectrometers found in research labs around the world.
  • The incident light from the light source can be transmitted, absorbed, or reflected through the sample.
• A p-n junction diode is a two-terminal device, which allows the electric current in only one direction while blocks the electric current in the opposite or reverse direction
  • The p-n junction, which is formed when the p-type and n-type semiconductors are joined, is called a p-n junction diode.
• A sonometer is an apparatus made of a hollow box having two holes.
  • A string is attached to it by which the transverse vibrations of strings can be studied.