Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Consider the following statements with respect to Scanning Tunneling Microscope:
1. It is used for imaging substances at the atomic level.
2.Piezoelectric principle is employed in STM.
Which of the statements given above is/are correct?

• A. 1 only
• B. 2 only
• C. 1 and 2
• D. None

Answer 1

The correct option is C 1 and 2

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Invented in 1981 by Nobel Laureates Gerd Binnig and Heinrich Rohrer of IBM, Scanning Tunneling Microscope is based on the concept of quantum tunneling and is used for imaging surfaces at atomic level.
Piezoelectric principle i.e the ability of certain materials to generate an electric charge in response to applied mechanical stress is employed in STM.