- Consider the following statements : Statement I: Some rare earth elements are used in the manufacture of flat television screens and computer monitors. Statement II: Some rare earth elements have phosphorescent properties. Which one of the following is correct in respect of the above statements?
Verified Answer
A. Both Statement I and Statement II are correct and Statement II explains Statement I
B. Both Statement I and Statement II are correct but Statement II does not explain Statement I
C. Statement I is correct but Statement II is not correct
D. Statement I is not correct but Statement II is correct
Explanation:
Both statements are correct. Rare earth elements are indeed used in flat television screens and computer monitors due to their unique optical properties, including phosphorescence. Statement II, which describes the phosphorescent properties of some rare earth elements, directly explains why these elements are valuable and utilized in display technologies as mentioned in Statement I.