GENERAL KNOWLEDGE

Detailed explanation-1: -The Doppler effect can be described as the effect produced by a moving source of waves in which there is an apparent upward shift in frequency for observers towards whom the source is approaching and an apparent downward shift in frequency for observers from whom the source is receding.

Detailed explanation-2: -Description: Doppler Effect works on both light and sound objects. For instance, when a sound object moves towards you, the frequency of the sound waves increases, leading to a higher pitch. Conversely, if it moves away from you, the frequency of the sound waves decreases and the pitch comes down.

Detailed explanation-3: -The apparent change in frequency of sound due to the relative motion between the observer and the source of sound is called doppler effect.

Detailed explanation-4: -When the source and observer are moving relative to each other, the frequency observed by the observer (fa) is different from the actual frequency produced by the source (f0). This is basically the definition of the Doppler effect in Physics.

Detailed explanation-5: -It will cause an increase in frequency heard by an observer when the source is moving toward the observer and a decrease in frequency heard by an observer when the source is moving away from the observer. The doppler effect can be observed when an ambulance with a siren on approaches and passes an observer.