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Question
Q With reference to quantum dots, consider the following statements:
Which of the statements given above is/are correct?
Q With reference to quantum dots, consider the following statements:
Which of the statements given above is/are correct?
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Solution
The correct option is C
2 only
Explanation:
Statement 1 is incorrect: Quantum dots (QDs) are man-made nanoscale crystals. These artificial semiconductor nanoparticles that have found applications in composites, solar cells and fluorescent biological labels.
Statement 2 is correct: When UV light hits these semiconducting nanoparticles, they can emit light of various colours.
Statement 3 is incorrect: The properties of a quantum dot are not only determined by its size but also by its shape, composition, and structure.
2 only
Explanation:
Statement 1 is incorrect: Quantum dots (QDs) are man-made nanoscale crystals. These artificial semiconductor nanoparticles that have found applications in composites, solar cells and fluorescent biological labels.
Statement 2 is correct: When UV light hits these semiconducting nanoparticles, they can emit light of various colours.
Statement 3 is incorrect: The properties of a quantum dot are not only determined by its size but also by its shape, composition, and structure.
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