Question

As temperature increases difference between apparent doppler frequency and actual frequency

Answer 1

• As the temperature increases difference between apparent Doppler frequency and actual frequency decreases.
• Speed of the sound is directly proportional to the square root of temperature.
• The actual frequency of sound does not depend on change with the temperature.
• The Doppler apparent frequency is a relative frequency of the sound wave.
• The difference between both of them is inversely proportional to the speed of sound.
• Thus the difference is inversely proportional to temperature.
• Therefore, an increase in temperature decreases the difference between apparent and Doppler frequency.