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← ScienceWhich optical displacement results when pulsars emit radiation?
A)Gravitational lensing of background stars✓
B)Refractive distortion within interstellar medium
C)Diffraction impacting shorter wavelengths
D)Aberration altering observed signal timing
💡 Explanation
Gravitational lensing occurs where spacetime curvature deflects light rays due to the pulsar's mass. Therefore, the observed position of background stars shifts because of frame-dragging, rather than refraction or diffraction from other interactions.
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