Q. Consider the following statements:
1.Optical tweezers are scientific instruments that use a highly focused laser beam to hold and move microscopic and sub-microscopic objects.
2.Optical tweezers are used in nanoengineering and nano-chemistry.
3.Optical tweezer was invented by Arthur Ashkin.
Which of the statements given above are correct?

[A] 1 and 2 only

[B] 2 and 3 only

[C] 1 and 3 only

[D] 1, 2 and 3

Answer: D
Notes:

Explanation –

Statement 1, 2 and 3 are correct. Optical tweezers are scientific instruments that use a highly focused laser beam to hold and move microscopic and sub-microscopic objects. Optical tweezers are used in nanoengineering and nano-chemistry. Optical tweezer was invented by Arthur Ashkin.

Source: ForumIAS

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