Answer to Question #40568 in Optics for Sanjeev

Question #40568

A STAR EMITTING RADIATION AT A WAVELENGTH OF 5000Å IS APPROACHING EARTH AT A VELOCITY OF 1.5x10^6 m/s. THE CHANGE IN WAVELENGTH ON EARTH IS :
1. 2.5Å
2. 1000 Å
3. ZERO
4. 25 Å

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