If the ratio of the concentration of ele...

If the ratio of the concentration of electron to that of holes in a semiconductor is `(7)/(5)` and the ratio of current is `(7)/(4)` then what is the ratio of their drift velocities ?

A

`4//7`

B

`5//8`

C

`4//5`

D

`5//4`

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The correct Answer is:

D

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