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?
Question:
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?
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?
Options
Answer: (a) Both are correct and II explains I
Explanation:
Rare earths like europium and terbium emit light when energized — their phosphorescent property explains their use in displays.
Explanation:
Rare earths like europium and terbium emit light when energized — their phosphorescent property explains their use in displays.
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