Question

1. What is Centre of Curvature?
2. What are Paraxial rays? ​

Answer 1

Read the stanza and pick out from the stanza the synonyms of given word’s ( Q 8 to 12)

Pain from word’s has left it’s scar

On mind and heart that's tender

Cuts and bruises now have healed;

It's word that I remember.

Q 8: Injury. =“.

Q 9: Delicate. =“..

Q10: Ache. =“..“

Q11: Cured. =““.

Q12: Brain. =“..

Q13: Complete the word chain.

Wind ___ duck _____ k______________________________

Answer 2

Answer:

1. In geometry, the center of curvature of a curve is found at a point that is at a distance from the curve equal to the radius of curvature lying on the normal vector. It is the point at infinity if the curvature is zero. The osculating circle to the curve is centered at the centre of curvature.

2. A paraxial ray is a ray which makes a small angle (θ) to the optical axis of the system, and lies close to the axis throughout the system.

Explanation:

MARK ME BRAINLIEST