Question

define unity.
explain propogation of light.​

Answer 1

Answer:

question 1) define unity.

the situation in which people are in agreement and working together.

question 2) explain propogation of light.

Rectilinear propagation of light refers to the propensity of light to travel along a straight line without any interference in its trajectory. When light travels through a medium, say air or water, it follows a straight line. ... Another example of rectilinear propagation of light involves the formation of shadows.

Answer 2

Answer:

propagation of light

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