Which of the following is related to Doppler effect?

option(1)

CONCEPT:

• Doppler effect: It is also known as Doppler shift which describes the changes in the frequency of sound or light wave produced by a moving source with respect to the observer.
  • Sound is the energy that is related to the Doppler effect.

EXPLANATION:

• The Doppler effect: It can be described as the effect produced by the waves in which there is an apparent shift in frequency for observers towards from whom the source is approaching and the apparent downward shift in frequency for observers from whom the source is receding.
• For example: When a sound object moves towards you, the frequency of the sound waves increases, leading to a higher pitch. The sound of ambulances or sirens as they pass by a person has a small wavelength and high frequency causes the Doppler effect.

Additional Information

• Magnetism: It is the force that is exerted by magnets when they attract or repel each other.
  • Magnetism is caused when the charged particle is in motion.
• Force: It is those types of physical quantities that act by the push or pull of the object.

Force = mass × accelereration.