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An observer moves towards a stationary source of sound with a speed 1/5th of the speed of sound. The wavelength and frequency of the sound emitted are λ and ƒ respectively. The apparent frequency and wavelength recorded by the observer are respectively.
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- 0.8ƒ, 0.8λ
- 1.2ƒ, 1.2λ
- 1.2ƒ, λ
- ƒ, 1.2λ
Correct Option: C
| ƒapparent = |  |  | ƒ = | ƒ = 1.2 ƒ | |||
| u | 5 |
Wavelength remains constant (unchanged) in this case.
