Question

P: Light ray traveling along the principle axis is undeviated. Q: Light ray traveling along the focus is undeviated. Which of the statement (s) are correct.​

Answer 1

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Q: Light ray traveling along the focus is undeviated

Answer 2

Light ray traveling along the focus is undeviated.

One ray of light becomes parallel to the principal axis of the lens and thus, passes through another focus after refraction through the lens. Another ray of light passes through the optical centre of the lens and goes straight.