Which optical phenomenon is utilized in reflective type telescopes, commonly known as Newtonian telescopes, to eliminate chromatic aberration?

💡 Solution & Explanation

Newtonian reflecting telescopes rely on a curved concave mirror to gather and focus light, completely avoiding the chromatic aberration inherent in lens-based refracting systems. Prisms utilize total internal reflection for steering light paths rather than eliminating chromatic dispersion in primary imaging. Large modern research telescopes almost exclusively use reflective optics.