What is scanning tunneling microscopy? How does it work?
Solution : (a) Why does the path of the charged particle bend The path of the charged particle bends because the path of the charge is repelled by the negatively charged plate and is attracted by the positively charged plate. (b) What is the sign of the electrical charge on the particle We know that like charges repel and opposite char ges attract, the charge is attracted towards positive plate and hence the sign of the electrical charge on the particle is negative. (c) As the charge on the plates is increased, would you expect the bending to increase, decrease, or stay the same Bending of the path is expected to increase as the charge on the plates is increased, because greater the magnitude of the charges, the greater is the charge attraction or repulsion. (d) As the mass of the particle is increased while the speed of the particles remains the same, would you expect the bending to increase, decrease, or stay the same As the mass of the particle is increased, speed remaining the same, bending of the particle decreases because of the linear momentum incurred on the particle increases.