CTET Prep: Science Questions - Physics - Light — Flashcards | Central Teacher Eligibility Test (CTET) | FatSkills

CTET Prep: Science Questions - Physics - Light — Flashcards

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Light or visible light is electromagnetic radiation that can be perceived by the human eye. Visible light is usually defined as having wavelengths in the range of 400–700 nanometres, corresponding to frequencies of 750–420 terahertz, between the infrared and the ultraviolet.

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A double convex glass lens of focal length f and having a circular aperture is cut into two halves, each having a semicircular aperture. The focal length of each half is
f
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