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Which outcome regarding light's frequency occurs aboard a high-acceleration spacecraft, explained by the equivalence principle?

A)Blueshift toward forward direction
B)Constant unchanged observed frequency
C)Redshift towards lateral direction
D)Polarization change along acceleration axis

💡 Explanation

Forward light shifts higher in frequency due to gravitational blueshift because acceleration simulates gravity fields, therefore perceived frequency increases rather than remains constant; redshift would occur moving opposite the direction.

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