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 thinlens.

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

Answer 1

Answer:

1. parallel rays of light are reflected by a concave mirror yo a point is called focus .
2. light is a form of energy and it travels in a straight line
3. parallel to principal axis
4. focus

Answer 2

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Explanation:

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