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Electronic Devices question

2006 · Shift 0 · Q100
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Electronic Devices question

2006 · Shift 0 · Q100

JEE MainPhysicsElectronic DevicesMCQ+4 / −1
If the ratio of the concentration of electrons to that of holes in a semiconductor is 75{7 \over 5}57​ and the ratio of currents is 74,{7 \over 4},47​, then what is the ratio of their drift velocities?
  1. A
    58{5 \over 8}85​
  2. B
    45{4 \over 5}54​
  3. C
    54{5 \over 4}45​
  4. D
    47{4 \over 7}74​
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