Multiple shadow regions can be observed in the wall behind the keyhole of a door. Option B is correct.
<h3>
What is diffraction?</h3>
It is a phenomenon that happens when a wave (Light) is passed through a narrow aperture or a sharp edge, the light bends at the edges.
The light bends at the edges because the sharp edges have less diameter than the wavelength of light.
Therefore, multiple shadow regions can be observed in the wall behind the keyhole of a door.
Learn more about diffraction:
brainly.com/question/10303995
Answer:
Alabama, Kentucky, Texas, and Missouri.
Explanation:
Everything in Earth's system can be placed into one of four major subsystems: land, water, living things, or air. These four subsystems are called "spheres." Specifically, they are the "lithosphere" (land), "hydrosphere" (water), "biosphere" (living things), and "atmosphere" (air).
From what i know it is c. it is a lever
Here, you need to use your "Protractor" as it is given in the question, but we can calculate the value with the help of our mathematical calculation too:
[ Protractor can be use only in real life, not here ]
Draw an imaginary line from initial position to final position.
Now, In that triangle, tan x = P/B
tan x = 1.4 / 2
tan x = 0.70
x = tan⁻¹ (0.70)
x = 35 [ tan 35 = 0.70 ]
In short, Your Answer would be 35 degrees
Hope this helps!
