Question

The unit of ratio of diffusion constant (D) and mobility (\(\mu\)) is:

• A. cm\(^2\)/V-sec
• B. Volts
• C. cm\(^2\)/sec
• D. A/m\(^2\)

Hint:

The diffusion constant and mobility in semiconductors are related through Einstein’s relation.

Answer 1

The Correct Option is A

The quantity \( D/\mu \) is expressed in cm\(^2\)/V-sec, which follows from the units of the diffusion constant and the mobility.
Final Answer: \[\boxed{\text{cm}^2/\text{V-sec}}\]