Suppose the angle of reflection measures 40 degrees. what is the angle of incidence?
a. 40 degrees
b. 50 degrees

40

Explanation:

If it is a flat mirror, the reflection and incidence are the same -- 40 degrees.

If it is anything else, more information is needed.

A. 40 degrees

Explanation:

The angle of reflection is equal to the angle of incidence. So both are equal.

When the rays of light fall incident on a plane angles of incidence and reflection are equal.

insects!

explanation:

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force