Question

Parallel rays of light are reflected by a concave mirror to a point called the distance from the

_______________to the pole of mirror.

14. Light is a form of _______________________and it travels in a _________________________________.

15.A ray of light passes ______________________ after refraction through the optical centre of a thin lens.

16. A ray parallel to the principal axis, after reflection, will pass through the _________________.​

Answer 1

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Explanation:

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