Which of the following hypotheses is incorrect? A I UV light can damage the eyes, then UV light may be the cause of blindness.
B.
The length of the string has an effect on the time of the oscillation. As the length shortens, the time taken for one oscillation also decreases.
If the diffusion rate through a membrane is related to the molecular size, then smaller the molecule, the faster it will pass through a membrane.
D
Soft drinks are acidic because of the presence of citric acid and phosphoric acid.

A

Explanation:

uv light doesn't cause permanent blindness rather causes a condition known as Photokeratitis.

photokeratitis is a painful condition caused by uv light to the eye.

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of carbon is as shown here in the image.

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.