Henri Becquerel expected to see only weak images on the photographic plate containing the uranium salt because he thought (1 point)
A.fluorescent minerals needed direct sunlight to produce radio waves.
B.fluorescent minerals needed direct sunlight to produce X-rays.***
C.fluorescent minerals needed direct sunlight to produce microwaves.
D.fluorescent minerals needed direct sunlight to produce gamma rays.
I agree
Correct
@emma the answer is B.
mhm noice
whats the answer tho
To answer this question, we can start by understanding the concept of fluorescence and its connection to uranium salts.
Fluorescence is the process in which a substance absorbs electromagnetic radiation, typically ultraviolet or visible light, and re-emits it as lower-energy radiation. In the case of uranium salts, they are known to exhibit fluorescence when exposed to ultraviolet light.
Henri Becquerel was investigating the phenomenon of fluorescence in uranium salts and its connection to radioactivity. He expected to see weak images on the photographic plate containing the uranium salt because he believed that the fluorescent minerals in the uranium salt needed direct sunlight to produce X-rays.
Therefore, the correct answer is B. fluorescent minerals needed direct sunlight to produce X-rays.
It's important to note that Henri Becquerel's expectation was based on his knowledge and assumptions at the time, and it was through his experiments that he discovered the phenomenon of radioactivity, which led to significant advancements in science.